Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility
The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the exces...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Adlarson, P. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017transfer abstract |
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| Schlagwörter: |
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| Umfang: |
14 |
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| Übergeordnetes Werk: |
Enthalten in: Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research - Klebanoff, Mark A. ELSEVIER, 2018, journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions, Amsterdam |
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| Übergeordnetes Werk: |
volume:959 ; year:2017 ; pages:102-115 ; extent:14 |
| Links: |
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| DOI / URN: |
10.1016/j.nuclphysa.2017.01.001 |
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| Katalog-ID: |
ELV020259646 |
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| 100 | 1 | |a Adlarson, P. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility |
| 264 | 1 | |c 2017transfer abstract | |
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| 520 | |a The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. | ||
| 520 | |a The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. | ||
| 650 | 7 | |a η meson |2 Elsevier | |
| 650 | 7 | |a η-Mesic nuclei |2 Elsevier | |
| 700 | 1 | |a Augustyniak, W. |4 oth | |
| 700 | 1 | |a Bardan, W. |4 oth | |
| 700 | 1 | |a Bashkanov, M. |4 oth | |
| 700 | 1 | |a Bergmann, F.S. |4 oth | |
| 700 | 1 | |a Berłowski, M. |4 oth | |
| 700 | 1 | |a Bhatt, H. |4 oth | |
| 700 | 1 | |a Bondar, A. |4 oth | |
| 700 | 1 | |a Büscher, M. |4 oth | |
| 700 | 1 | |a Calén, H. |4 oth | |
| 700 | 1 | |a Ciepał, I. |4 oth | |
| 700 | 1 | |a Clement, H. |4 oth | |
| 700 | 1 | |a Czerwiński, E. |4 oth | |
| 700 | 1 | |a Demmich, K. |4 oth | |
| 700 | 1 | |a Engels, R. |4 oth | |
| 700 | 1 | |a Erven, A. |4 oth | |
| 700 | 1 | |a Erven, W. |4 oth | |
| 700 | 1 | |a Eyrich, W. |4 oth | |
| 700 | 1 | |a Fedorets, P. |4 oth | |
| 700 | 1 | |a Föhl, K. |4 oth | |
| 700 | 1 | |a Fransson, K. |4 oth | |
| 700 | 1 | |a Goldenbaum, F. |4 oth | |
| 700 | 1 | |a Goswami, A. |4 oth | |
| 700 | 1 | |a Grigoryev, K. |4 oth | |
| 700 | 1 | |a Gullström, C.-O. |4 oth | |
| 700 | 1 | |a Heijkenskjöld, L. |4 oth | |
| 700 | 1 | |a Hejny, V. |4 oth | |
| 700 | 1 | |a Hüsken, N. |4 oth | |
| 700 | 1 | |a Jarczyk, L. |4 oth | |
| 700 | 1 | |a Johansson, T. |4 oth | |
| 700 | 1 | |a Kamys, B. |4 oth | |
| 700 | 1 | |a Kelkar, N.G. |4 oth | |
| 700 | 1 | |a Kemmerling, G. |4 oth | |
| 700 | 1 | |a Khatri, G. |4 oth | |
| 700 | 1 | |a Khoukaz, A. |4 oth | |
| 700 | 1 | |a Khreptak, O. |4 oth | |
| 700 | 1 | |a Kirillov, D.A. |4 oth | |
| 700 | 1 | |a Kistryn, S. |4 oth | |
| 700 | 1 | |a Kleines, H. |4 oth | |
| 700 | 1 | |a Kłos, B. |4 oth | |
| 700 | 1 | |a Krzemień, W. |4 oth | |
| 700 | 1 | |a Kulessa, P. |4 oth | |
| 700 | 1 | |a Kupść, A. |4 oth | |
| 700 | 1 | |a Kuzmin, A. |4 oth | |
| 700 | 1 | |a Lalwani, K. |4 oth | |
| 700 | 1 | |a Lersch, D. |4 oth | |
| 700 | 1 | |a Lorentz, B. |4 oth | |
| 700 | 1 | |a Magiera, A. |4 oth | |
| 700 | 1 | |a Maier, R. |4 oth | |
| 700 | 1 | |a Marciniewski, P. |4 oth | |
| 700 | 1 | |a Mariański, B. |4 oth | |
| 700 | 1 | |a Morsch, H.-P. |4 oth | |
| 700 | 1 | |a Moskal, P. |4 oth | |
| 700 | 1 | |a Ohm, H. |4 oth | |
| 700 | 1 | |a Perez del Rio, E. |4 oth | |
| 700 | 1 | |a Piskunov, N.M. |4 oth | |
| 700 | 1 | |a Prasuhn, D. |4 oth | |
| 700 | 1 | |a Pszczel, D. |4 oth | |
| 700 | 1 | |a Pysz, K. |4 oth | |
| 700 | 1 | |a Pyszniak, A. |4 oth | |
| 700 | 1 | |a Ritman, J. |4 oth | |
| 700 | 1 | |a Roy, A. |4 oth | |
| 700 | 1 | |a Rudy, Z. |4 oth | |
| 700 | 1 | |a Rundel, O. |4 oth | |
| 700 | 1 | |a Sawant, S. |4 oth | |
| 700 | 1 | |a Schadmand, S. |4 oth | |
| 700 | 1 | |a Schätti-Ozerianska, I. |4 oth | |
| 700 | 1 | |a Sefzick, T. |4 oth | |
| 700 | 1 | |a Serdyuk, V. |4 oth | |
| 700 | 1 | |a Shwartz, B. |4 oth | |
| 700 | 1 | |a Sitterberg, K. |4 oth | |
| 700 | 1 | |a Skorodko, T. |4 oth | |
| 700 | 1 | |a Skurzok, M. |4 oth | |
| 700 | 1 | |a Smyrski, J. |4 oth | |
| 700 | 1 | |a Sopov, V. |4 oth | |
| 700 | 1 | |a Stassen, R. |4 oth | |
| 700 | 1 | |a Stepaniak, J. |4 oth | |
| 700 | 1 | |a Stephan, E. |4 oth | |
| 700 | 1 | |a Sterzenbach, G. |4 oth | |
| 700 | 1 | |a Stockhorst, H. |4 oth | |
| 700 | 1 | |a Ströher, H. |4 oth | |
| 700 | 1 | |a Szczurek, A. |4 oth | |
| 700 | 1 | |a Trzciński, A. |4 oth | |
| 700 | 1 | |a Varma, R. |4 oth | |
| 700 | 1 | |a Wolke, M. |4 oth | |
| 700 | 1 | |a Wrońska, A. |4 oth | |
| 700 | 1 | |a Wüstner, P. |4 oth | |
| 700 | 1 | |a Yamamoto, A. |4 oth | |
| 700 | 1 | |a Zabierowski, J. |4 oth | |
| 700 | 1 | |a Zieliński, M.J. |4 oth | |
| 700 | 1 | |a Złomańczuk, J. |4 oth | |
| 700 | 1 | |a Żuprański, P. |4 oth | |
| 700 | 1 | |a Żurek, M. |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n North-Holland Publ. Co |a Klebanoff, Mark A. ELSEVIER |t Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research |d 2018 |d journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions |g Amsterdam |w (DE-627)ELV000986615 |
| 773 | 1 | 8 | |g volume:959 |g year:2017 |g pages:102-115 |g extent:14 |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.nuclphysa.2017.01.001 |3 Volltext |
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2017transfer abstract |
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| allfields |
10.1016/j.nuclphysa.2017.01.001 doi GBVA2017011000022.pica (DE-627)ELV020259646 (ELSEVIER)S0375-9474(17)30006-4 DE-627 ger DE-627 rakwb eng 530 DE-600 610 VZ 44.92 bkl Adlarson, P. verfasserin aut Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility 2017transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. η meson Elsevier η-Mesic nuclei Elsevier Augustyniak, W. oth Bardan, W. oth Bashkanov, M. oth Bergmann, F.S. oth Berłowski, M. oth Bhatt, H. oth Bondar, A. oth Büscher, M. oth Calén, H. oth Ciepał, I. oth Clement, H. oth Czerwiński, E. oth Demmich, K. oth Engels, R. oth Erven, A. oth Erven, W. oth Eyrich, W. oth Fedorets, P. oth Föhl, K. oth Fransson, K. oth Goldenbaum, F. oth Goswami, A. oth Grigoryev, K. oth Gullström, C.-O. oth Heijkenskjöld, L. oth Hejny, V. oth Hüsken, N. oth Jarczyk, L. oth Johansson, T. oth Kamys, B. oth Kelkar, N.G. oth Kemmerling, G. oth Khatri, G. oth Khoukaz, A. oth Khreptak, O. oth Kirillov, D.A. oth Kistryn, S. oth Kleines, H. oth Kłos, B. oth Krzemień, W. oth Kulessa, P. oth Kupść, A. oth Kuzmin, A. oth Lalwani, K. oth Lersch, D. oth Lorentz, B. oth Magiera, A. oth Maier, R. oth Marciniewski, P. oth Mariański, B. oth Morsch, H.-P. oth Moskal, P. oth Ohm, H. oth Perez del Rio, E. oth Piskunov, N.M. oth Prasuhn, D. oth Pszczel, D. oth Pysz, K. oth Pyszniak, A. oth Ritman, J. oth Roy, A. oth Rudy, Z. oth Rundel, O. oth Sawant, S. oth Schadmand, S. oth Schätti-Ozerianska, I. oth Sefzick, T. oth Serdyuk, V. oth Shwartz, B. oth Sitterberg, K. oth Skorodko, T. oth Skurzok, M. oth Smyrski, J. oth Sopov, V. oth Stassen, R. oth Stepaniak, J. oth Stephan, E. oth Sterzenbach, G. oth Stockhorst, H. oth Ströher, H. oth Szczurek, A. oth Trzciński, A. oth Varma, R. oth Wolke, M. oth Wrońska, A. oth Wüstner, P. oth Yamamoto, A. oth Zabierowski, J. oth Zieliński, M.J. oth Złomańczuk, J. oth Żuprański, P. oth Żurek, M. oth Enthalten in North-Holland Publ. Co Klebanoff, Mark A. ELSEVIER Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research 2018 journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions Amsterdam (DE-627)ELV000986615 volume:959 year:2017 pages:102-115 extent:14 https://doi.org/10.1016/j.nuclphysa.2017.01.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 959 2017 102-115 14 |
| spelling |
10.1016/j.nuclphysa.2017.01.001 doi GBVA2017011000022.pica (DE-627)ELV020259646 (ELSEVIER)S0375-9474(17)30006-4 DE-627 ger DE-627 rakwb eng 530 DE-600 610 VZ 44.92 bkl Adlarson, P. verfasserin aut Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility 2017transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. η meson Elsevier η-Mesic nuclei Elsevier Augustyniak, W. oth Bardan, W. oth Bashkanov, M. oth Bergmann, F.S. oth Berłowski, M. oth Bhatt, H. oth Bondar, A. oth Büscher, M. oth Calén, H. oth Ciepał, I. oth Clement, H. oth Czerwiński, E. oth Demmich, K. oth Engels, R. oth Erven, A. oth Erven, W. oth Eyrich, W. oth Fedorets, P. oth Föhl, K. oth Fransson, K. oth Goldenbaum, F. oth Goswami, A. oth Grigoryev, K. oth Gullström, C.-O. oth Heijkenskjöld, L. oth Hejny, V. oth Hüsken, N. oth Jarczyk, L. oth Johansson, T. oth Kamys, B. oth Kelkar, N.G. oth Kemmerling, G. oth Khatri, G. oth Khoukaz, A. oth Khreptak, O. oth Kirillov, D.A. oth Kistryn, S. oth Kleines, H. oth Kłos, B. oth Krzemień, W. oth Kulessa, P. oth Kupść, A. oth Kuzmin, A. oth Lalwani, K. oth Lersch, D. oth Lorentz, B. oth Magiera, A. oth Maier, R. oth Marciniewski, P. oth Mariański, B. oth Morsch, H.-P. oth Moskal, P. oth Ohm, H. oth Perez del Rio, E. oth Piskunov, N.M. oth Prasuhn, D. oth Pszczel, D. oth Pysz, K. oth Pyszniak, A. oth Ritman, J. oth Roy, A. oth Rudy, Z. oth Rundel, O. oth Sawant, S. oth Schadmand, S. oth Schätti-Ozerianska, I. oth Sefzick, T. oth Serdyuk, V. oth Shwartz, B. oth Sitterberg, K. oth Skorodko, T. oth Skurzok, M. oth Smyrski, J. oth Sopov, V. oth Stassen, R. oth Stepaniak, J. oth Stephan, E. oth Sterzenbach, G. oth Stockhorst, H. oth Ströher, H. oth Szczurek, A. oth Trzciński, A. oth Varma, R. oth Wolke, M. oth Wrońska, A. oth Wüstner, P. oth Yamamoto, A. oth Zabierowski, J. oth Zieliński, M.J. oth Złomańczuk, J. oth Żuprański, P. oth Żurek, M. oth Enthalten in North-Holland Publ. Co Klebanoff, Mark A. ELSEVIER Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research 2018 journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions Amsterdam (DE-627)ELV000986615 volume:959 year:2017 pages:102-115 extent:14 https://doi.org/10.1016/j.nuclphysa.2017.01.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 959 2017 102-115 14 |
| allfields_unstemmed |
10.1016/j.nuclphysa.2017.01.001 doi GBVA2017011000022.pica (DE-627)ELV020259646 (ELSEVIER)S0375-9474(17)30006-4 DE-627 ger DE-627 rakwb eng 530 DE-600 610 VZ 44.92 bkl Adlarson, P. verfasserin aut Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility 2017transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. η meson Elsevier η-Mesic nuclei Elsevier Augustyniak, W. oth Bardan, W. oth Bashkanov, M. oth Bergmann, F.S. oth Berłowski, M. oth Bhatt, H. oth Bondar, A. oth Büscher, M. oth Calén, H. oth Ciepał, I. oth Clement, H. oth Czerwiński, E. oth Demmich, K. oth Engels, R. oth Erven, A. oth Erven, W. oth Eyrich, W. oth Fedorets, P. oth Föhl, K. oth Fransson, K. oth Goldenbaum, F. oth Goswami, A. oth Grigoryev, K. oth Gullström, C.-O. oth Heijkenskjöld, L. oth Hejny, V. oth Hüsken, N. oth Jarczyk, L. oth Johansson, T. oth Kamys, B. oth Kelkar, N.G. oth Kemmerling, G. oth Khatri, G. oth Khoukaz, A. oth Khreptak, O. oth Kirillov, D.A. oth Kistryn, S. oth Kleines, H. oth Kłos, B. oth Krzemień, W. oth Kulessa, P. oth Kupść, A. oth Kuzmin, A. oth Lalwani, K. oth Lersch, D. oth Lorentz, B. oth Magiera, A. oth Maier, R. oth Marciniewski, P. oth Mariański, B. oth Morsch, H.-P. oth Moskal, P. oth Ohm, H. oth Perez del Rio, E. oth Piskunov, N.M. oth Prasuhn, D. oth Pszczel, D. oth Pysz, K. oth Pyszniak, A. oth Ritman, J. oth Roy, A. oth Rudy, Z. oth Rundel, O. oth Sawant, S. oth Schadmand, S. oth Schätti-Ozerianska, I. oth Sefzick, T. oth Serdyuk, V. oth Shwartz, B. oth Sitterberg, K. oth Skorodko, T. oth Skurzok, M. oth Smyrski, J. oth Sopov, V. oth Stassen, R. oth Stepaniak, J. oth Stephan, E. oth Sterzenbach, G. oth Stockhorst, H. oth Ströher, H. oth Szczurek, A. oth Trzciński, A. oth Varma, R. oth Wolke, M. oth Wrońska, A. oth Wüstner, P. oth Yamamoto, A. oth Zabierowski, J. oth Zieliński, M.J. oth Złomańczuk, J. oth Żuprański, P. oth Żurek, M. oth Enthalten in North-Holland Publ. Co Klebanoff, Mark A. ELSEVIER Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research 2018 journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions Amsterdam (DE-627)ELV000986615 volume:959 year:2017 pages:102-115 extent:14 https://doi.org/10.1016/j.nuclphysa.2017.01.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 959 2017 102-115 14 |
| allfieldsGer |
10.1016/j.nuclphysa.2017.01.001 doi GBVA2017011000022.pica (DE-627)ELV020259646 (ELSEVIER)S0375-9474(17)30006-4 DE-627 ger DE-627 rakwb eng 530 DE-600 610 VZ 44.92 bkl Adlarson, P. verfasserin aut Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility 2017transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. η meson Elsevier η-Mesic nuclei Elsevier Augustyniak, W. oth Bardan, W. oth Bashkanov, M. oth Bergmann, F.S. oth Berłowski, M. oth Bhatt, H. oth Bondar, A. oth Büscher, M. oth Calén, H. oth Ciepał, I. oth Clement, H. oth Czerwiński, E. oth Demmich, K. oth Engels, R. oth Erven, A. oth Erven, W. oth Eyrich, W. oth Fedorets, P. oth Föhl, K. oth Fransson, K. oth Goldenbaum, F. oth Goswami, A. oth Grigoryev, K. oth Gullström, C.-O. oth Heijkenskjöld, L. oth Hejny, V. oth Hüsken, N. oth Jarczyk, L. oth Johansson, T. oth Kamys, B. oth Kelkar, N.G. oth Kemmerling, G. oth Khatri, G. oth Khoukaz, A. oth Khreptak, O. oth Kirillov, D.A. oth Kistryn, S. oth Kleines, H. oth Kłos, B. oth Krzemień, W. oth Kulessa, P. oth Kupść, A. oth Kuzmin, A. oth Lalwani, K. oth Lersch, D. oth Lorentz, B. oth Magiera, A. oth Maier, R. oth Marciniewski, P. oth Mariański, B. oth Morsch, H.-P. oth Moskal, P. oth Ohm, H. oth Perez del Rio, E. oth Piskunov, N.M. oth Prasuhn, D. oth Pszczel, D. oth Pysz, K. oth Pyszniak, A. oth Ritman, J. oth Roy, A. oth Rudy, Z. oth Rundel, O. oth Sawant, S. oth Schadmand, S. oth Schätti-Ozerianska, I. oth Sefzick, T. oth Serdyuk, V. oth Shwartz, B. oth Sitterberg, K. oth Skorodko, T. oth Skurzok, M. oth Smyrski, J. oth Sopov, V. oth Stassen, R. oth Stepaniak, J. oth Stephan, E. oth Sterzenbach, G. oth Stockhorst, H. oth Ströher, H. oth Szczurek, A. oth Trzciński, A. oth Varma, R. oth Wolke, M. oth Wrońska, A. oth Wüstner, P. oth Yamamoto, A. oth Zabierowski, J. oth Zieliński, M.J. oth Złomańczuk, J. oth Żuprański, P. oth Żurek, M. oth Enthalten in North-Holland Publ. Co Klebanoff, Mark A. ELSEVIER Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research 2018 journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions Amsterdam (DE-627)ELV000986615 volume:959 year:2017 pages:102-115 extent:14 https://doi.org/10.1016/j.nuclphysa.2017.01.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 959 2017 102-115 14 |
| allfieldsSound |
10.1016/j.nuclphysa.2017.01.001 doi GBVA2017011000022.pica (DE-627)ELV020259646 (ELSEVIER)S0375-9474(17)30006-4 DE-627 ger DE-627 rakwb eng 530 DE-600 610 VZ 44.92 bkl Adlarson, P. verfasserin aut Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility 2017transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. η meson Elsevier η-Mesic nuclei Elsevier Augustyniak, W. oth Bardan, W. oth Bashkanov, M. oth Bergmann, F.S. oth Berłowski, M. oth Bhatt, H. oth Bondar, A. oth Büscher, M. oth Calén, H. oth Ciepał, I. oth Clement, H. oth Czerwiński, E. oth Demmich, K. oth Engels, R. oth Erven, A. oth Erven, W. oth Eyrich, W. oth Fedorets, P. oth Föhl, K. oth Fransson, K. oth Goldenbaum, F. oth Goswami, A. oth Grigoryev, K. oth Gullström, C.-O. oth Heijkenskjöld, L. oth Hejny, V. oth Hüsken, N. oth Jarczyk, L. oth Johansson, T. oth Kamys, B. oth Kelkar, N.G. oth Kemmerling, G. oth Khatri, G. oth Khoukaz, A. oth Khreptak, O. oth Kirillov, D.A. oth Kistryn, S. oth Kleines, H. oth Kłos, B. oth Krzemień, W. oth Kulessa, P. oth Kupść, A. oth Kuzmin, A. oth Lalwani, K. oth Lersch, D. oth Lorentz, B. oth Magiera, A. oth Maier, R. oth Marciniewski, P. oth Mariański, B. oth Morsch, H.-P. oth Moskal, P. oth Ohm, H. oth Perez del Rio, E. oth Piskunov, N.M. oth Prasuhn, D. oth Pszczel, D. oth Pysz, K. oth Pyszniak, A. oth Ritman, J. oth Roy, A. oth Rudy, Z. oth Rundel, O. oth Sawant, S. oth Schadmand, S. oth Schätti-Ozerianska, I. oth Sefzick, T. oth Serdyuk, V. oth Shwartz, B. oth Sitterberg, K. oth Skorodko, T. oth Skurzok, M. oth Smyrski, J. oth Sopov, V. oth Stassen, R. oth Stepaniak, J. oth Stephan, E. oth Sterzenbach, G. oth Stockhorst, H. oth Ströher, H. oth Szczurek, A. oth Trzciński, A. oth Varma, R. oth Wolke, M. oth Wrońska, A. oth Wüstner, P. oth Yamamoto, A. oth Zabierowski, J. oth Zieliński, M.J. oth Złomańczuk, J. oth Żuprański, P. oth Żurek, M. oth Enthalten in North-Holland Publ. Co Klebanoff, Mark A. ELSEVIER Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research 2018 journal devoted to the experimental and theoretical study of the fundamental constituents of matter and their interactions Amsterdam (DE-627)ELV000986615 volume:959 year:2017 pages:102-115 extent:14 https://doi.org/10.1016/j.nuclphysa.2017.01.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.92 Gynäkologie VZ AR 959 2017 102-115 14 |
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Enthalten in Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research Amsterdam volume:959 year:2017 pages:102-115 extent:14 |
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Enthalten in Historical (retrospective) cohort studies and other epidemiologic study designs in perinatal research Amsterdam volume:959 year:2017 pages:102-115 extent:14 |
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Adlarson, P. @@aut@@ Augustyniak, W. @@oth@@ Bardan, W. @@oth@@ Bashkanov, M. @@oth@@ Bergmann, F.S. @@oth@@ Berłowski, M. @@oth@@ Bhatt, H. @@oth@@ Bondar, A. @@oth@@ Büscher, M. @@oth@@ Calén, H. @@oth@@ Ciepał, I. @@oth@@ Clement, H. @@oth@@ Czerwiński, E. @@oth@@ Demmich, K. @@oth@@ Engels, R. @@oth@@ Erven, A. @@oth@@ Erven, W. @@oth@@ Eyrich, W. @@oth@@ Fedorets, P. @@oth@@ Föhl, K. @@oth@@ Fransson, K. @@oth@@ Goldenbaum, F. @@oth@@ Goswami, A. @@oth@@ Grigoryev, K. @@oth@@ Gullström, C.-O. @@oth@@ Heijkenskjöld, L. @@oth@@ Hejny, V. @@oth@@ Hüsken, N. @@oth@@ Jarczyk, L. @@oth@@ Johansson, T. @@oth@@ Kamys, B. @@oth@@ Kelkar, N.G. @@oth@@ Kemmerling, G. @@oth@@ Khatri, G. @@oth@@ Khoukaz, A. @@oth@@ Khreptak, O. @@oth@@ Kirillov, D.A. @@oth@@ Kistryn, S. @@oth@@ Kleines, H. @@oth@@ Kłos, B. @@oth@@ Krzemień, W. @@oth@@ Kulessa, P. @@oth@@ Kupść, A. @@oth@@ Kuzmin, A. @@oth@@ Lalwani, K. @@oth@@ Lersch, D. @@oth@@ Lorentz, B. @@oth@@ Magiera, A. @@oth@@ Maier, R. @@oth@@ Marciniewski, P. @@oth@@ Mariański, B. @@oth@@ Morsch, H.-P. @@oth@@ Moskal, P. @@oth@@ Ohm, H. @@oth@@ Perez del Rio, E. @@oth@@ Piskunov, N.M. @@oth@@ Prasuhn, D. @@oth@@ Pszczel, D. @@oth@@ Pysz, K. @@oth@@ Pyszniak, A. @@oth@@ Ritman, J. @@oth@@ Roy, A. @@oth@@ Rudy, Z. @@oth@@ Rundel, O. @@oth@@ Sawant, S. @@oth@@ Schadmand, S. @@oth@@ Schätti-Ozerianska, I. @@oth@@ Sefzick, T. @@oth@@ Serdyuk, V. @@oth@@ Shwartz, B. @@oth@@ Sitterberg, K. @@oth@@ Skorodko, T. @@oth@@ Skurzok, M. @@oth@@ Smyrski, J. @@oth@@ Sopov, V. @@oth@@ Stassen, R. @@oth@@ Stepaniak, J. @@oth@@ Stephan, E. @@oth@@ Sterzenbach, G. @@oth@@ Stockhorst, H. @@oth@@ Ströher, H. @@oth@@ Szczurek, A. @@oth@@ Trzciński, A. @@oth@@ Varma, R. @@oth@@ Wolke, M. @@oth@@ Wrońska, A. @@oth@@ Wüstner, P. @@oth@@ Yamamoto, A. @@oth@@ Zabierowski, J. @@oth@@ Zieliński, M.J. @@oth@@ Złomańczuk, J. @@oth@@ Żuprański, P. @@oth@@ Żurek, M. @@oth@@ |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV020259646</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230625131508.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">180603s2017 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.nuclphysa.2017.01.001</subfield><subfield code="2">doi</subfield></datafield><datafield tag="028" ind1="5" ind2="2"><subfield code="a">GBVA2017011000022.pica</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV020259646</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S0375-9474(17)30006-4</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">530</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.92</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Adlarson, P.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2017transfer abstract</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">14</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. 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search for η-mesic he 4 in the d d → he 3 n π 0 and d d → he 3 p π − reactions with the wasa-at-cosy facility |
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Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility |
| abstract |
The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. |
| abstractGer |
The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. |
| abstract_unstemmed |
The search for He 4 - η bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the d d → He 3 n π 0 and d d → He 3 p π − processes. The deuteron beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the d d → He 4 η reaction ranging from Q = − 70 MeV to Q = 30 MeV . The luminosity was determined based on the d d → He 3 n reaction and the quasi-free proton–proton scattering via d d → p p n s p e c t a t o r n s p e c t a t o r reactions. The excitation functions, determined independently for the measured reactions, do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in d d → ( He 4 - η ) b o u n d → He 3 n π 0 and d d → ( He 4 - η ) b o u n d → He 3 p π − processes were determined taking into account the isospin relation between the both of the considered channels. The results of the analysis depend on the assumptions of the N ⁎ (1535) momentum distribution in the anticipated mesic- He 4 . Assuming, as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in He 4 , we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for n π 0 and p π − channels, respectively. However, based on the recent theoretical findings of the N ⁎ (1535) momentum distribution in the N ⁎ - He 3 nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for n π 0 and p π − channels respectively. |
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| title_short |
Search for η-mesic He 4 in the d d → He 3 n π 0 and d d → He 3 p π − reactions with the WASA-at-COSY facility |
| url |
https://doi.org/10.1016/j.nuclphysa.2017.01.001 |
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Augustyniak, W. Bardan, W. Bashkanov, M. Bergmann, F.S. Berłowski, M. Bhatt, H. Bondar, A. Büscher, M. Calén, H. Ciepał, I. Clement, H. Czerwiński, E. Demmich, K. Engels, R. Erven, A. Erven, W. Eyrich, W. Fedorets, P. Föhl, K. Fransson, K. Goldenbaum, F. Goswami, A. Grigoryev, K. Gullström, C.-O. Heijkenskjöld, L. Hejny, V. Hüsken, N. Jarczyk, L. Johansson, T. Kamys, B. Kelkar, N.G. Kemmerling, G. Khatri, G. Khoukaz, A. Khreptak, O. Kirillov, D.A. Kistryn, S. Kleines, H. Kłos, B. Krzemień, W. Kulessa, P. Kupść, A. Kuzmin, A. Lalwani, K. Lersch, D. Lorentz, B. Magiera, A. Maier, R. Marciniewski, P. Mariański, B. Morsch, H.-P. Moskal, P. Ohm, H. Perez del Rio, E. Piskunov, N.M. Prasuhn, D. Pszczel, D. Pysz, K. Pyszniak, A. Ritman, J. Roy, A. Rudy, Z. Rundel, O. Sawant, S. Schadmand, S. Schätti-Ozerianska, I. Sefzick, T. Serdyuk, V. Shwartz, B. Sitterberg, K. Skorodko, T. Skurzok, M. Smyrski, J. Sopov, V. Stassen, R. Stepaniak, J. Stephan, E. Sterzenbach, G. Stockhorst, H. Ströher, H. Szczurek, A. Trzciński, A. Varma, R. Wolke, M. Wrońska, A. Wüstner, P. Yamamoto, A. Zabierowski, J. Zieliński, M.J. Złomańczuk, J. Żuprański, P. Żurek, M. |
| author2Str |
Augustyniak, W. Bardan, W. Bashkanov, M. Bergmann, F.S. Berłowski, M. Bhatt, H. Bondar, A. Büscher, M. Calén, H. Ciepał, I. Clement, H. Czerwiński, E. Demmich, K. Engels, R. Erven, A. Erven, W. Eyrich, W. Fedorets, P. Föhl, K. Fransson, K. Goldenbaum, F. Goswami, A. Grigoryev, K. Gullström, C.-O. Heijkenskjöld, L. Hejny, V. Hüsken, N. Jarczyk, L. Johansson, T. Kamys, B. Kelkar, N.G. Kemmerling, G. Khatri, G. Khoukaz, A. Khreptak, O. Kirillov, D.A. Kistryn, S. Kleines, H. Kłos, B. Krzemień, W. Kulessa, P. Kupść, A. Kuzmin, A. Lalwani, K. Lersch, D. Lorentz, B. Magiera, A. Maier, R. Marciniewski, P. Mariański, B. Morsch, H.-P. Moskal, P. Ohm, H. Perez del Rio, E. Piskunov, N.M. Prasuhn, D. Pszczel, D. Pysz, K. Pyszniak, A. Ritman, J. Roy, A. Rudy, Z. Rundel, O. Sawant, S. Schadmand, S. Schätti-Ozerianska, I. Sefzick, T. Serdyuk, V. Shwartz, B. Sitterberg, K. Skorodko, T. Skurzok, M. Smyrski, J. Sopov, V. Stassen, R. Stepaniak, J. Stephan, E. Sterzenbach, G. Stockhorst, H. Ströher, H. Szczurek, A. Trzciński, A. Varma, R. Wolke, M. Wrońska, A. Wüstner, P. Yamamoto, A. Zabierowski, J. Zieliński, M.J. Złomańczuk, J. Żuprański, P. Żurek, M. |
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| doi_str |
10.1016/j.nuclphysa.2017.01.001 |
| up_date |
2024-07-06T17:07:22.587Z |
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