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.

dc.contributor.author	Sokhoyan, V.
dc.contributor.author	Downie, E. J.
dc.contributor.author	Mornacchi, E.
dc.contributor.author	McGovern, J. A.
dc.contributor.author	Krupina, N.
dc.contributor.author	Afzal, F.
dc.contributor.author	Ahrens, J.
dc.contributor.author	Akondi, C. S.
dc.contributor.author	Annand, J. R. M.
dc.contributor.author	Arends, H. J.
dc.contributor.author	Beck, R.
dc.date.accessioned	2018-02-08T09:49:13Z
dc.date.available	2018-02-08T09:49:13Z
dc.date.issued	2017
dc.identifier.citation	European Physical Journal A, (2017) 53: 14	en_US
dc.identifier.issn	1434-6001
dc.identifier.uri	https://arxiv.org/pdf/1611.03769.pdf
dc.identifier.uri	http://repository.seku.ac.ke/handle/123456789/3839
dc.description	DOI: 10.1140/epja/i2017-12203-0	en_US
dc.description.abstract	The scalar dipole polarizabilities, αE1 and βM1, 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. The results are compared with model calculations and the influence of the experimental data on the extraction of the scalar polarizabilities is determined.	en_US
dc.publisher	Springer Verlag	en_US
dc.title	Determination of the scalar polarizabilities of the proton using beam asymmetry\Sigma_ {3} in Compton scattering	en_US