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arXiv · 1205.3387

Virtual Compton Scattering and the Generalized Polarizabilities of the Proton at Q^2=0.92 and 1.76 GeV^2

H. Fonvieille·G. Laveissiere·N. Degrande·S. Jaminion·C. Jutier·L. Todor·R. Di Salvo·L. Van Hoorebeke·L. C. Alexa·B. D. Anderson·K. A. Aniol·K. Arundell·G. Audit·L. Auerbach·F. T. Baker·M. Baylac·J. Berthot·P. Y. Bertin·W. Bertozzi·L. Bimbot·W. U. Boeglin·E. J. Brash·V. Breton·H. Breuer·E. Burtin·J. R. Calarco·L. S. Cardman·C. Cavata·C. -C. Chang·J. -P. Chen·E. Chudakov·E. Cisbani·D. S. Dale·C. W. deJager·R. De Leo·A. Deur·N. d'Hose·G. E. Dodge·J. J. Domingo·L. Elouadrhiri·M. B. Epstein·L. A. Ewell·J. M. Finn·K. G. Fissum·G. Fournier·B. Frois·S. Frullani·C. Furget·H. Gao·J. Gao·F. Garibaldi·A. Gasparian·S. Gilad·R. Gilman·A. Glamazdin·C. Glashausser·J. Gomez·V. Gorbenko·P. Grenier·P. A. M. Guichon·J. O. Hansen·R. Holmes·M. Holtrop·C. Howell·G. M. Huber·C. E. Hyde·S. Incerti·M. Iodice·J. Jardillier·M. K. Jones·W. Kahl·S. Kato·A. T. Katramatou·J. J. Kelly·S. Kerhoas·A. Ketikyan·M. Khayat·K. Kino·S. Kox·L. H. Kramer·K. S. Kumar·G. Kumbartzki·M. Kuss·A. Leone·J. J. LeRose·M. Liang·R. A. Lindgren·N. Liyanage·G. J. Lolos·R. W. Lourie·R. Madey·K. Maeda·S. Malov·D. M. Manley·C. Marchand·D. Marchand·D. J. Margaziotis·P. Markowitz·J. Marroncle·J. Martino
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Abstract

Virtual Compton Scattering (VCS) on the proton has been studied at Jefferson Lab using the exclusive photon electroproduction reaction (e p --> e p gamma). This paper gives a detailed account of the analysis which has led to the determination of the structure functions P_LL-P_TT/epsilon and P_LT, and the electric and magnetic generalized polarizabilities (GPs) alpha_E(Q^2) and beta_M(Q^2) at values of the four-momentum transfer squared Q^2= 0.92 and 1.76 GeV^2. These data, together with the results of VCS experiments at lower momenta, help building a coherent picture of the electric and magnetic GPs of the proton over the full measured Q^2-range, and point to their non-trivial behavior.

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H. Fonvieille, G. Laveissiere, N. Degrande, S. Jaminion, C. Jutier, L. Todor, R. Di Salvo, L. Van Hoorebeke, L. C. Alexa, B. D. Anderson, K. A. Aniol, K. Arundell, G. Audit, L. Auerbach, F. T. Baker, M. Baylac, J. Berthot, P. Y. Bertin, W. Bertozzi, L. Bimbot, W. U. Boeglin, E. J. Brash, V. Breton, H. Breuer, E. Burtin, J. R. Calarco, L. S. Cardman, C. Cavata, C. -C. Chang, J. -P. Chen, E. Chudakov, E. Cisbani, D. S. Dale, C. W. deJager, R. De Leo, A. Deur, N. d'Hose, G. E. Dodge, J. J. Domingo, L. Elouadrhiri, M. B. Epstein, L. A. Ewell, J. M. Finn, K. G. Fissum, G. Fournier, B. Frois, S. Frullani, C. Furget, H. Gao, J. Gao, F. Garibaldi, A. Gasparian, S. Gilad, R. Gilman, A. Glamazdin, C. Glashausser, J. Gomez, V. Gorbenko, P. Grenier, P. A. M. Guichon, J. O. Hansen, R. Holmes, M. Holtrop, C. Howell, G. M. Huber, C. E. Hyde, S. Incerti, M. Iodice, J. Jardillier, M. K. Jones, W. Kahl, S. Kato, A. T. Katramatou, J. J. Kelly, S. Kerhoas, A. Ketikyan, M. Khayat, K. Kino, S. Kox, L. H. Kramer, K. S. Kumar, G. Kumbartzki, M. Kuss, A. Leone, J. J. LeRose, M. Liang, R. A. Lindgren, N. Liyanage, G. J. Lolos, R. W. Lourie, R. Madey, K. Maeda, S. Malov, D. M. Manley, C. Marchand, D. Marchand, D. J. Margaziotis, P. Markowitz, J. Marroncle, J. Martino. 2012-05-15. Virtual Compton Scattering and the Generalized Polarizabilities of the Proton at Q^2=0.92 and 1.76 GeV^2. https://doi.org/10.1103/physrevc.86.015210

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