A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2
Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual...
Ausführliche Beschreibung
Autor*in: |
Janssens, P. [verfasserIn] |
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Format: |
Artikel |
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Sprache: |
Englisch |
Erschienen: |
2008 |
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Anmerkung: |
© SIF, Springer-Verlag Berlin Heidelberg 2008 |
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Übergeordnetes Werk: |
Enthalten in: The European physical journal / A - Springer-Verlag, 1998, 37(2008), 1 vom: Juli, Seite 1-8 |
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Übergeordnetes Werk: |
volume:37 ; year:2008 ; number:1 ; month:07 ; pages:1-8 |
Links: |
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DOI / URN: |
10.1140/epja/i2008-10609-3 |
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Katalog-ID: |
OLC2051750556 |
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245 | 1 | 0 | |a A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
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520 | |a Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). | ||
700 | 1 | |a Doria, L. |4 aut | |
700 | 1 | |a Achenbach, P. |4 aut | |
700 | 1 | |a Ayerbe Gayoso, C. |4 aut | |
700 | 1 | |a Baumann, D. |4 aut | |
700 | 1 | |a Bernauer, J. C. |4 aut | |
700 | 1 | |a Bensafa, I. K. |4 aut | |
700 | 1 | |a Böhm, R. |4 aut | |
700 | 1 | |a Bosnar, D. |4 aut | |
700 | 1 | |a Burtin, E. |4 aut | |
700 | 1 | |a D’Hose, N. |4 aut | |
700 | 1 | |a Defaÿ, X. |4 aut | |
700 | 1 | |a Ding, M. |4 aut | |
700 | 1 | |a Distler, M. O. |4 aut | |
700 | 1 | |a Fonvieille, H. |4 aut | |
700 | 1 | |a Friedrich, J. |4 aut | |
700 | 1 | |a Friedrich, J. M. |4 aut | |
700 | 1 | |a Laveissière, G. |4 aut | |
700 | 1 | |a Makek, M. |4 aut | |
700 | 1 | |a Marroncle, J. |4 aut | |
700 | 1 | |a Merkel, H. |4 aut | |
700 | 1 | |a Müller, U. |4 aut | |
700 | 1 | |a Nungesser, L. |4 aut | |
700 | 1 | |a Pasquini, B. |4 aut | |
700 | 1 | |a Pochodzalla, J. |4 aut | |
700 | 1 | |a Postavaru, O. |4 aut | |
700 | 1 | |a Potokar, M. |4 aut | |
700 | 1 | |a Ryckbosch, D. |4 aut | |
700 | 1 | |a Sanchez Majos, S. |4 aut | |
700 | 1 | |a Schlimme, B. S. |4 aut | |
700 | 1 | |a Seimetz, M. |4 aut | |
700 | 1 | |a Širca, S. |4 aut | |
700 | 1 | |a Tamas, G. |4 aut | |
700 | 1 | |a Van de Vyver, R. |4 aut | |
700 | 1 | |a Van Hoorebeke, L. |4 aut | |
700 | 1 | |a Van Overloop, A. |4 aut | |
700 | 1 | |a Walcher, Th. |4 aut | |
700 | 1 | |a Weinriefer, M. |4 aut | |
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10.1140/epja/i2008-10609-3 doi (DE-627)OLC2051750556 (DE-He213)i2008-10609-3-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ Janssens, P. verfasserin aut A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © SIF, Springer-Verlag Berlin Heidelberg 2008 Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). Doria, L. aut Achenbach, P. aut Ayerbe Gayoso, C. aut Baumann, D. aut Bernauer, J. C. aut Bensafa, I. K. aut Böhm, R. aut Bosnar, D. aut Burtin, E. aut D’Hose, N. aut Defaÿ, X. aut Ding, M. aut Distler, M. O. aut Fonvieille, H. aut Friedrich, J. aut Friedrich, J. M. aut Laveissière, G. aut Makek, M. aut Marroncle, J. aut Merkel, H. aut Müller, U. aut Nungesser, L. aut Pasquini, B. aut Pochodzalla, J. aut Postavaru, O. aut Potokar, M. aut Ryckbosch, D. aut Sanchez Majos, S. aut Schlimme, B. S. aut Seimetz, M. aut Širca, S. aut Tamas, G. aut Van de Vyver, R. aut Van Hoorebeke, L. aut Van Overloop, A. aut Walcher, Th. aut Weinriefer, M. aut Enthalten in The European physical journal / A Springer-Verlag, 1998 37(2008), 1 vom: Juli, Seite 1-8 (DE-627)239430387 (DE-600)1413603-X (DE-576)064448398 1434-6001 nnns volume:37 year:2008 number:1 month:07 pages:1-8 https://doi.org/10.1140/epja/i2008-10609-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_105 GBV_ILN_267 GBV_ILN_2002 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4082 GBV_ILN_4116 GBV_ILN_4277 GBV_ILN_4307 AR 37 2008 1 07 1-8 |
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10.1140/epja/i2008-10609-3 doi (DE-627)OLC2051750556 (DE-He213)i2008-10609-3-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ Janssens, P. verfasserin aut A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © SIF, Springer-Verlag Berlin Heidelberg 2008 Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). Doria, L. aut Achenbach, P. aut Ayerbe Gayoso, C. aut Baumann, D. aut Bernauer, J. C. aut Bensafa, I. K. aut Böhm, R. aut Bosnar, D. aut Burtin, E. aut D’Hose, N. aut Defaÿ, X. aut Ding, M. aut Distler, M. O. aut Fonvieille, H. aut Friedrich, J. aut Friedrich, J. M. aut Laveissière, G. aut Makek, M. aut Marroncle, J. aut Merkel, H. aut Müller, U. aut Nungesser, L. aut Pasquini, B. aut Pochodzalla, J. aut Postavaru, O. aut Potokar, M. aut Ryckbosch, D. aut Sanchez Majos, S. aut Schlimme, B. S. aut Seimetz, M. aut Širca, S. aut Tamas, G. aut Van de Vyver, R. aut Van Hoorebeke, L. aut Van Overloop, A. aut Walcher, Th. aut Weinriefer, M. aut Enthalten in The European physical journal / A Springer-Verlag, 1998 37(2008), 1 vom: Juli, Seite 1-8 (DE-627)239430387 (DE-600)1413603-X (DE-576)064448398 1434-6001 nnns volume:37 year:2008 number:1 month:07 pages:1-8 https://doi.org/10.1140/epja/i2008-10609-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_105 GBV_ILN_267 GBV_ILN_2002 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4082 GBV_ILN_4116 GBV_ILN_4277 GBV_ILN_4307 AR 37 2008 1 07 1-8 |
allfields_unstemmed |
10.1140/epja/i2008-10609-3 doi (DE-627)OLC2051750556 (DE-He213)i2008-10609-3-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ Janssens, P. verfasserin aut A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © SIF, Springer-Verlag Berlin Heidelberg 2008 Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). Doria, L. aut Achenbach, P. aut Ayerbe Gayoso, C. aut Baumann, D. aut Bernauer, J. C. aut Bensafa, I. K. aut Böhm, R. aut Bosnar, D. aut Burtin, E. aut D’Hose, N. aut Defaÿ, X. aut Ding, M. aut Distler, M. O. aut Fonvieille, H. aut Friedrich, J. aut Friedrich, J. M. aut Laveissière, G. aut Makek, M. aut Marroncle, J. aut Merkel, H. aut Müller, U. aut Nungesser, L. aut Pasquini, B. aut Pochodzalla, J. aut Postavaru, O. aut Potokar, M. aut Ryckbosch, D. aut Sanchez Majos, S. aut Schlimme, B. S. aut Seimetz, M. aut Širca, S. aut Tamas, G. aut Van de Vyver, R. aut Van Hoorebeke, L. aut Van Overloop, A. aut Walcher, Th. aut Weinriefer, M. aut Enthalten in The European physical journal / A Springer-Verlag, 1998 37(2008), 1 vom: Juli, Seite 1-8 (DE-627)239430387 (DE-600)1413603-X (DE-576)064448398 1434-6001 nnns volume:37 year:2008 number:1 month:07 pages:1-8 https://doi.org/10.1140/epja/i2008-10609-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_105 GBV_ILN_267 GBV_ILN_2002 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4082 GBV_ILN_4116 GBV_ILN_4277 GBV_ILN_4307 AR 37 2008 1 07 1-8 |
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10.1140/epja/i2008-10609-3 doi (DE-627)OLC2051750556 (DE-He213)i2008-10609-3-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ Janssens, P. verfasserin aut A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © SIF, Springer-Verlag Berlin Heidelberg 2008 Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). Doria, L. aut Achenbach, P. aut Ayerbe Gayoso, C. aut Baumann, D. aut Bernauer, J. C. aut Bensafa, I. K. aut Böhm, R. aut Bosnar, D. aut Burtin, E. aut D’Hose, N. aut Defaÿ, X. aut Ding, M. aut Distler, M. O. aut Fonvieille, H. aut Friedrich, J. aut Friedrich, J. M. aut Laveissière, G. aut Makek, M. aut Marroncle, J. aut Merkel, H. aut Müller, U. aut Nungesser, L. aut Pasquini, B. aut Pochodzalla, J. aut Postavaru, O. aut Potokar, M. aut Ryckbosch, D. aut Sanchez Majos, S. aut Schlimme, B. S. aut Seimetz, M. aut Širca, S. aut Tamas, G. aut Van de Vyver, R. aut Van Hoorebeke, L. aut Van Overloop, A. aut Walcher, Th. aut Weinriefer, M. aut Enthalten in The European physical journal / A Springer-Verlag, 1998 37(2008), 1 vom: Juli, Seite 1-8 (DE-627)239430387 (DE-600)1413603-X (DE-576)064448398 1434-6001 nnns volume:37 year:2008 number:1 month:07 pages:1-8 https://doi.org/10.1140/epja/i2008-10609-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_105 GBV_ILN_267 GBV_ILN_2002 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4082 GBV_ILN_4116 GBV_ILN_4277 GBV_ILN_4307 AR 37 2008 1 07 1-8 |
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10.1140/epja/i2008-10609-3 doi (DE-627)OLC2051750556 (DE-He213)i2008-10609-3-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ Janssens, P. verfasserin aut A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © SIF, Springer-Verlag Berlin Heidelberg 2008 Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). Doria, L. aut Achenbach, P. aut Ayerbe Gayoso, C. aut Baumann, D. aut Bernauer, J. C. aut Bensafa, I. K. aut Böhm, R. aut Bosnar, D. aut Burtin, E. aut D’Hose, N. aut Defaÿ, X. aut Ding, M. aut Distler, M. O. aut Fonvieille, H. aut Friedrich, J. aut Friedrich, J. M. aut Laveissière, G. aut Makek, M. aut Marroncle, J. aut Merkel, H. aut Müller, U. aut Nungesser, L. aut Pasquini, B. aut Pochodzalla, J. aut Postavaru, O. aut Potokar, M. aut Ryckbosch, D. aut Sanchez Majos, S. aut Schlimme, B. S. aut Seimetz, M. aut Širca, S. aut Tamas, G. aut Van de Vyver, R. aut Van Hoorebeke, L. aut Van Overloop, A. aut Walcher, Th. aut Weinriefer, M. aut Enthalten in The European physical journal / A Springer-Verlag, 1998 37(2008), 1 vom: Juli, Seite 1-8 (DE-627)239430387 (DE-600)1413603-X (DE-576)064448398 1434-6001 nnns volume:37 year:2008 number:1 month:07 pages:1-8 https://doi.org/10.1140/epja/i2008-10609-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_30 GBV_ILN_62 GBV_ILN_70 GBV_ILN_105 GBV_ILN_267 GBV_ILN_2002 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_4082 GBV_ILN_4116 GBV_ILN_4277 GBV_ILN_4307 AR 37 2008 1 07 1-8 |
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Janssens, P. @@aut@@ Doria, L. @@aut@@ Achenbach, P. @@aut@@ Ayerbe Gayoso, C. @@aut@@ Baumann, D. @@aut@@ Bernauer, J. C. @@aut@@ Bensafa, I. K. @@aut@@ Böhm, R. @@aut@@ Bosnar, D. @@aut@@ Burtin, E. @@aut@@ D’Hose, N. @@aut@@ Defaÿ, X. @@aut@@ Ding, M. @@aut@@ Distler, M. O. @@aut@@ Fonvieille, H. @@aut@@ Friedrich, J. @@aut@@ Friedrich, J. M. @@aut@@ Laveissière, G. @@aut@@ Makek, M. @@aut@@ Marroncle, J. @@aut@@ Merkel, H. @@aut@@ Müller, U. @@aut@@ Nungesser, L. @@aut@@ Pasquini, B. @@aut@@ Pochodzalla, J. @@aut@@ Postavaru, O. @@aut@@ Potokar, M. @@aut@@ Ryckbosch, D. @@aut@@ Sanchez Majos, S. @@aut@@ Schlimme, B. S. @@aut@@ Seimetz, M. @@aut@@ Širca, S. @@aut@@ Tamas, G. @@aut@@ Van de Vyver, R. @@aut@@ Van Hoorebeke, L. @@aut@@ Van Overloop, A. @@aut@@ Walcher, Th. @@aut@@ Weinriefer, M. @@aut@@ |
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Janssens, P. |
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Janssens, P. ddc 530 A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
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530 VZ A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
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A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
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A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
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Janssens, P. Doria, L. Achenbach, P. Ayerbe Gayoso, C. Baumann, D. Bernauer, J. C. Bensafa, I. K. Böhm, R. Bosnar, D. Burtin, E. D’Hose, N. Defaÿ, X. Ding, M. Distler, M. O. Fonvieille, H. Friedrich, J. Friedrich, J. M. Laveissière, G. Makek, M. Marroncle, J. Merkel, H. Müller, U. Nungesser, L. Pasquini, B. Pochodzalla, J. Postavaru, O. Potokar, M. Ryckbosch, D. Sanchez Majos, S. Schlimme, B. S. Seimetz, M. Širca, S. Tamas, G. Van de Vyver, R. Van Hoorebeke, L. Van Overloop, A. Walcher, Th. Weinriefer, M. |
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a new measurement of the structure functions $ p_{ll} $ - $ p_{tt} $/ε and $ p_{lt} $ in virtual compton scattering at $ q^{2} $ = 0.33 (gev/c)2 |
title_auth |
A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
abstract |
Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). © SIF, Springer-Verlag Berlin Heidelberg 2008 |
abstractGer |
Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). © SIF, Springer-Verlag Berlin Heidelberg 2008 |
abstract_unstemmed |
Abstract The cross-section of the ep → e′p′γ reaction has been measured at Q2 = 0.33 (GeV/c)2. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial Q2-evolution of the generalized polarizabilities and call for more measurements in the low-Q2 region (≤ 1 (GeV/c)2). © SIF, Springer-Verlag Berlin Heidelberg 2008 |
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title_short |
A new measurement of the structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ in virtual Compton scattering at $ Q^{2} $ = 0.33 (GeV/c)2 |
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https://doi.org/10.1140/epja/i2008-10609-3 |
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Doria, L. Achenbach, P. Ayerbe Gayoso, C. Baumann, D. Bernauer, J. C. Bensafa, I. K. Böhm, R. Bosnar, D. Burtin, E. D’Hose, N. Defaÿ, X. Ding, M. Distler, M. O. Fonvieille, H. Friedrich, J. Friedrich, J. M. Laveissière, G. Makek, M. Marroncle, J. Merkel, H. Müller, U. Nungesser, L. Pasquini, B. Pochodzalla, J. Postavaru, O. Potokar, M. Ryckbosch, D. Sanchez Majos, S. Schlimme, B. S. Seimetz, M. Širca, S. Tamas, G. Van de Vyver, R. Van Hoorebeke, L. Van Overloop, A. Walcher, Th Weinriefer, M. |
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Doria, L. Achenbach, P. Ayerbe Gayoso, C. Baumann, D. Bernauer, J. C. Bensafa, I. K. Böhm, R. Bosnar, D. Burtin, E. D’Hose, N. Defaÿ, X. Ding, M. Distler, M. O. Fonvieille, H. Friedrich, J. Friedrich, J. M. Laveissière, G. Makek, M. Marroncle, J. Merkel, H. Müller, U. Nungesser, L. Pasquini, B. Pochodzalla, J. Postavaru, O. Potokar, M. Ryckbosch, D. Sanchez Majos, S. Schlimme, B. S. Seimetz, M. Širca, S. Tamas, G. Van de Vyver, R. Van Hoorebeke, L. Van Overloop, A. Walcher, Th Weinriefer, M. |
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The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross-section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $ P_{LL} $ - $ P_{TT} $/ε and $ P_{LT} $ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same Q2. This difference, however, is purely due to our more refined analysis of the data. 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