Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target
We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has als...
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E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1994 |
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| Reproduktion: |
Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
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| Übergeordnetes Werk: |
in: Physics Letters B - Amsterdam : Elsevier, 329(1994), 2-3, Seite 407-412 |
| Übergeordnetes Werk: |
volume:329 ; year:1994 ; number:2-3 ; pages:407-412 |
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NLEJ181705060 |
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| 245 | 1 | 0 | |a Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target |
| 264 | 1 | |c 1994 | |
| 336 | |a nicht spezifiziert |b zzz |2 rdacontent | ||
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| 520 | |a We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. | ||
| 533 | |f Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 | ||
| 700 | 1 | |a Ableev, V.G. |4 oth | |
| 700 | 1 | |a Adamo, A. |4 oth | |
| 700 | 1 | |a Agnello, M. |4 oth | |
| 700 | 1 | |a Andrighetto, A. |4 oth | |
| 700 | 1 | |a Balestra, F. |4 oth | |
| 700 | 1 | |a Belli, G. |4 oth | |
| 700 | 1 | |a Bendiscioli, G. |4 oth | |
| 700 | 1 | |a Bertin, A. |4 oth | |
| 700 | 1 | |a Boccaccio, P. |4 oth | |
| 700 | 1 | |a Bonazzola, G.C. |4 oth | |
| 700 | 1 | |a Bressani, T. |4 oth | |
| 700 | 1 | |a Bruschi, M. |4 oth | |
| 700 | 1 | |a Bussa, M.P. |4 oth | |
| 700 | 1 | |a Busso, L. |4 oth | |
| 700 | 1 | |a Calvo, D. |4 oth | |
| 700 | 1 | |a Capponi, M. |4 oth | |
| 700 | 1 | |a Cerello, P. |4 oth | |
| 700 | 1 | |a Cicalo, C. |4 oth | |
| 700 | 1 | |a Corradini, M. |4 oth | |
| 700 | 1 | |a Costa, S. |4 oth | |
| 700 | 1 | |a D'Antone, I. |4 oth | |
| 700 | 1 | |a De Castro, S. |4 oth | |
| 700 | 1 | |a D'Isep, F. |4 oth | |
| 700 | 1 | |a Donzella, A. |4 oth | |
| 700 | 1 | |a Fava, L. |4 oth | |
| 700 | 1 | |a Feliciello, A. |4 oth | |
| 700 | 1 | |a Ferrero, L. |4 oth | |
| 700 | 1 | |a Filippi, A. |4 oth | |
| 700 | 1 | |a Filippini, V. |4 oth | |
| 700 | 1 | |a Galli, D. |4 oth | |
| 700 | 1 | |a Garfagnini, R. |4 oth | |
| 700 | 1 | |a Gastaldi, U. |4 oth | |
| 700 | 1 | |a Gianotti, P. |4 oth | |
| 700 | 1 | |a Grasso, A. |4 oth | |
| 700 | 1 | |a Guaraldo, C. |4 oth | |
| 700 | 1 | |a Iazzi, F. |4 oth | |
| 700 | 1 | |a Lai, A. |4 oth | |
| 700 | 1 | |a Lanaro, A. |4 oth | |
| 700 | 1 | |a Lodi Rizzini, E. |4 oth | |
| 700 | 1 | |a Lombardi, M. |4 oth | |
| 700 | 1 | |a Lucherini, V. |4 oth | |
| 700 | 1 | |a Maggiora, A. |4 oth | |
| 700 | 1 | |a Maneva, G. |4 oth | |
| 700 | 1 | |a Marcello, S. |4 oth | |
| 700 | 1 | |a Marconi, U. |4 oth | |
| 700 | 1 | |a Margagliotti, G. |4 oth | |
| 700 | 1 | |a Maron, G. |4 oth | |
| 700 | 1 | |a Masoni, A. |4 oth | |
| 700 | 1 | |a Massa, I. |4 oth | |
| 700 | 1 | |a Minetti, B. |4 oth | |
| 700 | 1 | |a Morando, M. |4 oth | |
| 700 | 1 | |a Montagna, P. |4 oth | |
| 700 | 1 | |a Musa, L. |4 oth | |
| 700 | 1 | |a Nichitiu, F. |4 oth | |
| 700 | 1 | |a Panzieri, D. |4 oth | |
| 700 | 1 | |a Pauli, G. |4 oth | |
| 700 | 1 | |a Piccinini, M. |4 oth | |
| 700 | 1 | |a Piragino, G. |4 oth | |
| 700 | 1 | |a Poli, M. |4 oth | |
| 700 | 1 | |a Puddu, G. |4 oth | |
| 700 | 1 | |a Ricci, R.A. |4 oth | |
| 700 | 1 | |a Rossetto, E. |4 oth | |
| 700 | 1 | |a Rotondi, A. |4 oth | |
| 700 | 1 | |a Rozhdestvensky, A.M. |4 oth | |
| 700 | 1 | |a Salvini, P. |4 oth | |
| 700 | 1 | |a Santi, L. |4 oth | |
| 700 | 1 | |a Sapozhnikov, M.G. |4 oth | |
| 700 | 1 | |a Semprini Cesari, N. |4 oth | |
| 700 | 1 | |a Serci, S. |4 oth | |
| 700 | 1 | |a Spighi, R. |4 oth | |
| 700 | 1 | |a Vecchi, S. |4 oth | |
| 700 | 1 | |a Temnikov, P. |4 oth | |
| 700 | 1 | |a Tessaro, S. |4 oth | |
| 700 | 1 | |a Tosello, F. |4 oth | |
| 700 | 1 | |a Tretyak, V.I. |4 oth | |
| 700 | 1 | |a Usai, G. |4 oth | |
| 700 | 1 | |a Vannucci, L. |4 oth | |
| 700 | 1 | |a Vedovato, G. |4 oth | |
| 700 | 1 | |a Venturelli, L. |4 oth | |
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| 700 | 1 | |a Vitale, A. |4 oth | |
| 700 | 1 | |a Zenoni, A. |4 oth | |
| 700 | 1 | |a Zoccoli, A. |4 oth | |
| 700 | 1 | |a Zosi, G. |4 oth | |
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(DE-627)NLEJ181705060 (DE-599)GBVNLZ181705060 DE-627 ger DE-627 rakwb eng Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target 1994 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Ableev, V.G. oth Adamo, A. oth Agnello, M. oth Andrighetto, A. oth Balestra, F. oth Belli, G. oth Bendiscioli, G. oth Bertin, A. oth Boccaccio, P. oth Bonazzola, G.C. oth Bressani, T. oth Bruschi, M. oth Bussa, M.P. oth Busso, L. oth Calvo, D. oth Capponi, M. oth Cerello, P. oth Cicalo, C. oth Corradini, M. oth Costa, S. oth D'Antone, I. oth De Castro, S. oth D'Isep, F. oth Donzella, A. oth Fava, L. oth Feliciello, A. oth Ferrero, L. oth Filippi, A. oth Filippini, V. oth Galli, D. oth Garfagnini, R. oth Gastaldi, U. oth Gianotti, P. oth Grasso, A. oth Guaraldo, C. oth Iazzi, F. oth Lai, A. oth Lanaro, A. oth Lodi Rizzini, E. oth Lombardi, M. oth Lucherini, V. oth Maggiora, A. oth Maneva, G. oth Marcello, S. oth Marconi, U. oth Margagliotti, G. oth Maron, G. oth Masoni, A. oth Massa, I. oth Minetti, B. oth Morando, M. oth Montagna, P. oth Musa, L. oth Nichitiu, F. oth Panzieri, D. oth Pauli, G. oth Piccinini, M. oth Piragino, G. oth Poli, M. oth Puddu, G. oth Ricci, R.A. oth Rossetto, E. oth Rotondi, A. oth Rozhdestvensky, A.M. oth Salvini, P. oth Santi, L. oth Sapozhnikov, M.G. oth Semprini Cesari, N. oth Serci, S. oth Spighi, R. oth Vecchi, S. oth Temnikov, P. oth Tessaro, S. oth Tosello, F. oth Tretyak, V.I. oth Usai, G. oth Vannucci, L. oth Vedovato, G. oth Venturelli, L. oth Villa, M. oth Vitale, A. oth Zenoni, A. oth Zoccoli, A. oth Zosi, G. oth in Physics Letters B Amsterdam : Elsevier 329(1994), 2-3, Seite 407-412 (DE-627)NLEJ177212217 (DE-600)1466612-1 0370-2693 nnns volume:329 year:1994 number:2-3 pages:407-412 http://dx.doi.org/10.1016/0370-2693(94)90794-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 329 1994 2-3 407-412 |
| spelling |
(DE-627)NLEJ181705060 (DE-599)GBVNLZ181705060 DE-627 ger DE-627 rakwb eng Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target 1994 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Ableev, V.G. oth Adamo, A. oth Agnello, M. oth Andrighetto, A. oth Balestra, F. oth Belli, G. oth Bendiscioli, G. oth Bertin, A. oth Boccaccio, P. oth Bonazzola, G.C. oth Bressani, T. oth Bruschi, M. oth Bussa, M.P. oth Busso, L. oth Calvo, D. oth Capponi, M. oth Cerello, P. oth Cicalo, C. oth Corradini, M. oth Costa, S. oth D'Antone, I. oth De Castro, S. oth D'Isep, F. oth Donzella, A. oth Fava, L. oth Feliciello, A. oth Ferrero, L. oth Filippi, A. oth Filippini, V. oth Galli, D. oth Garfagnini, R. oth Gastaldi, U. oth Gianotti, P. oth Grasso, A. oth Guaraldo, C. oth Iazzi, F. oth Lai, A. oth Lanaro, A. oth Lodi Rizzini, E. oth Lombardi, M. oth Lucherini, V. oth Maggiora, A. oth Maneva, G. oth Marcello, S. oth Marconi, U. oth Margagliotti, G. oth Maron, G. oth Masoni, A. oth Massa, I. oth Minetti, B. oth Morando, M. oth Montagna, P. oth Musa, L. oth Nichitiu, F. oth Panzieri, D. oth Pauli, G. oth Piccinini, M. oth Piragino, G. oth Poli, M. oth Puddu, G. oth Ricci, R.A. oth Rossetto, E. oth Rotondi, A. oth Rozhdestvensky, A.M. oth Salvini, P. oth Santi, L. oth Sapozhnikov, M.G. oth Semprini Cesari, N. oth Serci, S. oth Spighi, R. oth Vecchi, S. oth Temnikov, P. oth Tessaro, S. oth Tosello, F. oth Tretyak, V.I. oth Usai, G. oth Vannucci, L. oth Vedovato, G. oth Venturelli, L. oth Villa, M. oth Vitale, A. oth Zenoni, A. oth Zoccoli, A. oth Zosi, G. oth in Physics Letters B Amsterdam : Elsevier 329(1994), 2-3, Seite 407-412 (DE-627)NLEJ177212217 (DE-600)1466612-1 0370-2693 nnns volume:329 year:1994 number:2-3 pages:407-412 http://dx.doi.org/10.1016/0370-2693(94)90794-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 329 1994 2-3 407-412 |
| allfields_unstemmed |
(DE-627)NLEJ181705060 (DE-599)GBVNLZ181705060 DE-627 ger DE-627 rakwb eng Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target 1994 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Ableev, V.G. oth Adamo, A. oth Agnello, M. oth Andrighetto, A. oth Balestra, F. oth Belli, G. oth Bendiscioli, G. oth Bertin, A. oth Boccaccio, P. oth Bonazzola, G.C. oth Bressani, T. oth Bruschi, M. oth Bussa, M.P. oth Busso, L. oth Calvo, D. oth Capponi, M. oth Cerello, P. oth Cicalo, C. oth Corradini, M. oth Costa, S. oth D'Antone, I. oth De Castro, S. oth D'Isep, F. oth Donzella, A. oth Fava, L. oth Feliciello, A. oth Ferrero, L. oth Filippi, A. oth Filippini, V. oth Galli, D. oth Garfagnini, R. oth Gastaldi, U. oth Gianotti, P. oth Grasso, A. oth Guaraldo, C. oth Iazzi, F. oth Lai, A. oth Lanaro, A. oth Lodi Rizzini, E. oth Lombardi, M. oth Lucherini, V. oth Maggiora, A. oth Maneva, G. oth Marcello, S. oth Marconi, U. oth Margagliotti, G. oth Maron, G. oth Masoni, A. oth Massa, I. oth Minetti, B. oth Morando, M. oth Montagna, P. oth Musa, L. oth Nichitiu, F. oth Panzieri, D. oth Pauli, G. oth Piccinini, M. oth Piragino, G. oth Poli, M. oth Puddu, G. oth Ricci, R.A. oth Rossetto, E. oth Rotondi, A. oth Rozhdestvensky, A.M. oth Salvini, P. oth Santi, L. oth Sapozhnikov, M.G. oth Semprini Cesari, N. oth Serci, S. oth Spighi, R. oth Vecchi, S. oth Temnikov, P. oth Tessaro, S. oth Tosello, F. oth Tretyak, V.I. oth Usai, G. oth Vannucci, L. oth Vedovato, G. oth Venturelli, L. oth Villa, M. oth Vitale, A. oth Zenoni, A. oth Zoccoli, A. oth Zosi, G. oth in Physics Letters B Amsterdam : Elsevier 329(1994), 2-3, Seite 407-412 (DE-627)NLEJ177212217 (DE-600)1466612-1 0370-2693 nnns volume:329 year:1994 number:2-3 pages:407-412 http://dx.doi.org/10.1016/0370-2693(94)90794-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 329 1994 2-3 407-412 |
| allfieldsGer |
(DE-627)NLEJ181705060 (DE-599)GBVNLZ181705060 DE-627 ger DE-627 rakwb eng Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target 1994 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Ableev, V.G. oth Adamo, A. oth Agnello, M. oth Andrighetto, A. oth Balestra, F. oth Belli, G. oth Bendiscioli, G. oth Bertin, A. oth Boccaccio, P. oth Bonazzola, G.C. oth Bressani, T. oth Bruschi, M. oth Bussa, M.P. oth Busso, L. oth Calvo, D. oth Capponi, M. oth Cerello, P. oth Cicalo, C. oth Corradini, M. oth Costa, S. oth D'Antone, I. oth De Castro, S. oth D'Isep, F. oth Donzella, A. oth Fava, L. oth Feliciello, A. oth Ferrero, L. oth Filippi, A. oth Filippini, V. oth Galli, D. oth Garfagnini, R. oth Gastaldi, U. oth Gianotti, P. oth Grasso, A. oth Guaraldo, C. oth Iazzi, F. oth Lai, A. oth Lanaro, A. oth Lodi Rizzini, E. oth Lombardi, M. oth Lucherini, V. oth Maggiora, A. oth Maneva, G. oth Marcello, S. oth Marconi, U. oth Margagliotti, G. oth Maron, G. oth Masoni, A. oth Massa, I. oth Minetti, B. oth Morando, M. oth Montagna, P. oth Musa, L. oth Nichitiu, F. oth Panzieri, D. oth Pauli, G. oth Piccinini, M. oth Piragino, G. oth Poli, M. oth Puddu, G. oth Ricci, R.A. oth Rossetto, E. oth Rotondi, A. oth Rozhdestvensky, A.M. oth Salvini, P. oth Santi, L. oth Sapozhnikov, M.G. oth Semprini Cesari, N. oth Serci, S. oth Spighi, R. oth Vecchi, S. oth Temnikov, P. oth Tessaro, S. oth Tosello, F. oth Tretyak, V.I. oth Usai, G. oth Vannucci, L. oth Vedovato, G. oth Venturelli, L. oth Villa, M. oth Vitale, A. oth Zenoni, A. oth Zoccoli, A. oth Zosi, G. oth in Physics Letters B Amsterdam : Elsevier 329(1994), 2-3, Seite 407-412 (DE-627)NLEJ177212217 (DE-600)1466612-1 0370-2693 nnns volume:329 year:1994 number:2-3 pages:407-412 http://dx.doi.org/10.1016/0370-2693(94)90794-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 329 1994 2-3 407-412 |
| allfieldsSound |
(DE-627)NLEJ181705060 (DE-599)GBVNLZ181705060 DE-627 ger DE-627 rakwb eng Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target 1994 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Ableev, V.G. oth Adamo, A. oth Agnello, M. oth Andrighetto, A. oth Balestra, F. oth Belli, G. oth Bendiscioli, G. oth Bertin, A. oth Boccaccio, P. oth Bonazzola, G.C. oth Bressani, T. oth Bruschi, M. oth Bussa, M.P. oth Busso, L. oth Calvo, D. oth Capponi, M. oth Cerello, P. oth Cicalo, C. oth Corradini, M. oth Costa, S. oth D'Antone, I. oth De Castro, S. oth D'Isep, F. oth Donzella, A. oth Fava, L. oth Feliciello, A. oth Ferrero, L. oth Filippi, A. oth Filippini, V. oth Galli, D. oth Garfagnini, R. oth Gastaldi, U. oth Gianotti, P. oth Grasso, A. oth Guaraldo, C. oth Iazzi, F. oth Lai, A. oth Lanaro, A. oth Lodi Rizzini, E. oth Lombardi, M. oth Lucherini, V. oth Maggiora, A. oth Maneva, G. oth Marcello, S. oth Marconi, U. oth Margagliotti, G. oth Maron, G. oth Masoni, A. oth Massa, I. oth Minetti, B. oth Morando, M. oth Montagna, P. oth Musa, L. oth Nichitiu, F. oth Panzieri, D. oth Pauli, G. oth Piccinini, M. oth Piragino, G. oth Poli, M. oth Puddu, G. oth Ricci, R.A. oth Rossetto, E. oth Rotondi, A. oth Rozhdestvensky, A.M. oth Salvini, P. oth Santi, L. oth Sapozhnikov, M.G. oth Semprini Cesari, N. oth Serci, S. oth Spighi, R. oth Vecchi, S. oth Temnikov, P. oth Tessaro, S. oth Tosello, F. oth Tretyak, V.I. oth Usai, G. oth Vannucci, L. oth Vedovato, G. oth Venturelli, L. oth Villa, M. oth Vitale, A. oth Zenoni, A. oth Zoccoli, A. oth Zosi, G. oth in Physics Letters B Amsterdam : Elsevier 329(1994), 2-3, Seite 407-412 (DE-627)NLEJ177212217 (DE-600)1466612-1 0370-2693 nnns volume:329 year:1994 number:2-3 pages:407-412 http://dx.doi.org/10.1016/0370-2693(94)90794-3 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 329 1994 2-3 407-412 |
| language |
English |
| source |
in Physics Letters B 329(1994), 2-3, Seite 407-412 volume:329 year:1994 number:2-3 pages:407-412 |
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Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target |
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Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target |
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measurement of the pp->π^+π^- and pp->k^+k^- annihilation frequencies in a 5 mb hydrogen gas target |
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Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target |
| abstract |
We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. |
| abstractGer |
We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. |
| abstract_unstemmed |
We report the first measurement of the K^+K^-, π^+π^- frequencies for p annihilations at rest in a gaseous H"2 target at low pressure (5 mbar). We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. Comparison with previous measurements shows that f"K"K decreases monotonically with the target density but its value at 5 mbar is still higher than the value with L X-ray in coincidence. |
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Measurement of the pp->π^+π^- and pp->K^+K^- annihilation frequencies in a 5 mb hydrogen gas target |
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Ableev, V.G. Adamo, A. Agnello, M. Andrighetto, A. Balestra, F. Belli, G. Bendiscioli, G. Bertin, A. Boccaccio, P. Bonazzola, G.C. Bressani, T. Bruschi, M. Bussa, M.P. Busso, L. Calvo, D. Capponi, M. Cerello, P. Cicalo, C. Corradini, M. Costa, S. D'Antone, I. De Castro, S. D'Isep, F. Donzella, A. Fava, L. Feliciello, A. Ferrero, L. Filippi, A. Filippini, V. Galli, D. Garfagnini, R. Gastaldi, U. Gianotti, P. Grasso, A. Guaraldo, C. Iazzi, F. Lai, A. Lanaro, A. Lodi Rizzini, E. Lombardi, M. Lucherini, V. Maggiora, A. Maneva, G. Marcello, S. Marconi, U. Margagliotti, G. Maron, G. Masoni, A. Massa, I. Minetti, B. Morando, M. Montagna, P. Musa, L. Nichitiu, F. Panzieri, D. Pauli, G. Piccinini, M. Piragino, G. Poli, M. Puddu, G. Ricci, R.A. Rossetto, E. Rotondi, A. Rozhdestvensky, A.M. Salvini, P. Santi, L. Sapozhnikov, M.G. Semprini Cesari, N. Serci, S. Spighi, R. Vecchi, S. Temnikov, P. Tessaro, S. Tosello, F. Tretyak, V.I. Usai, G. Vannucci, L. Vedovato, G. Venturelli, L. Villa, M. Vitale, A. Zenoni, A. Zoccoli, A. Zosi, G. |
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We have obtained: f"π"π = (4.26+/-0.11)x10^-^3, f"K"K = (0.46+/-0.03)x10^-^3. The ratio R = f"K"K/f"π"π has also been measured at a pressure of 2 mbar. 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