Determination of the scalar polarizabilities of the proton using beam asymmetry $\Sigma_{3}$ in Compton scattering

Sokhoyan, V.; Downie, E. J.; Mornacchi, E.; McGovern, J. A.; Krupina, N.; Afzal, F.; Ahrens, J.; Akondi, C. S.; Annand, J. R.  M.; Arends, H. J.; Beck, R.; Braghieri, A.; Briscoe, W. J.; Cividini, F.; Collicott, C.; Costanza, S.; Denig, A.; Dieterle, M.; Ferretti, M.; Gardner, S.; Garni, S.; Glazier, D. I.; Glowa, D.; Gradl, W.; Gurevich, G.; Hamilton, D.; Hornidge, D.; Huber, G. M.; Käser, A.; Kashevarov, V. L.; Keshelashvili, I.; Kondratiev, R.; Korolija, M.; Krusche, B.; Lensky, V.; Linturi, J.; Lisin, V.; Livingston, K.; MacGregor, I. J.  D.; Macrae, R.; Manley, D. M.; Martel, P. P.; Middleton, D. G.; Miskimen, R.; Mushkarenkov, A.; Neiser, A.; Oberle, M.; Ortega Spina, H.; Ostrick, M.; Ott, P.; Otte, P. B.; Oussena, B.; Paudyal, D.; Pedroni, P.; Polonski, A.; Prakhov, S.; Rajabi, A.; Rostomyan, T.; Sarty, A.; Schumann, S.; Spieker, K.; Steffen, O.; Strakovsky, I. I.; Strandberg, B.; Strub, T.; Supek, I.; Thiel, A.; Thiel, M.; Thomas, A.; Unverzagt, M.; Wagner, S.; Watts, D. P.; Wettig, J.; Witthauer, L.; Werthmüller, D.; Wolfes, M.; Zana, L.

doi:10.1140/epja/i2017-12203-0

Determination of the scalar polarizabilities of the proton using beam asymmetry $$\Sigma_{3}$$ in Compton scattering

Journal Article · Sun Jan 01 00:00:00 EST 2017 · European Physical Journal. A

DOI:https://doi.org/10.1140/epja/i2017-12203-0· OSTI ID:1439718

Sokhoyan, V. ^[1]; Downie, E. J.; Mornacchi, E.; McGovern, J. A.; Krupina, N.; Afzal, F.; Ahrens, J.; Akondi, C. S.; Annand, J. R. M.; Arends, H. J.; Beck, R.; Braghieri, A.; Briscoe, W. J.; Cividini, F.; Collicott, C.; Costanza, S.; Denig, A.; Dieterle, M.; Ferretti, M.; Gardner, S. more »

Institut f¨ur Kernphysik, Universit¨at Mainz, D-55099 Mainz, Germany

The scalar dipole polarizabilities, α_E1 and β_M1, are fundamental properties related to the internal dynamics of the nucleon. The currently accepted values of the proton polarizabilities were determined by fitting to unpolarized proton Compton scattering cross section data. The measurement of the beam asymmetry Σ₃ in a certain kinematical range provides an alternative approach to the extraction of the scalar polarizabilities. At the Mainz Microtron (MAMI) the beam asymmetry was measured for Compton scattering below pion photoproduction threshold for the first time. Finally, the results are compared with model calculations and the influence of the experimental data on the extraction of the scalar polarizabilities is determined.

View Accepted Manuscript (DOE)

Research Organization:: George Washington Univ., Washington, DC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Contributing Organization:: The A2 Collaboration

Grant/Contract Number:: SC0016583

OSTI ID:: 1439718

Alternate ID(s):: OSTI ID: 22612910

Journal Information:: European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 1 Vol. 53; ISSN 1434-6001

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Proton scalar dipole polarizabilities from real Compton scattering data using fixed-t subtracted dispersion relations and the bootstrap method Pasquini, B.; Pedroni, P.; Sconfietti, S. Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 10 https://doi.org/10.1088/1361-6471/ab323a	journal	September 2019
Proton scalar dipole polarizabilities from real Compton scattering data, using fixed-t subtracted dispersion relations and the bootstrap method Pasquini, B.; Pedroni, P.; Sconfietti, S. arXiv https://doi.org/10.48550/arxiv.1903.07952	text	January 2019

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