Comparison between the transverse responses of the reactions C(e, e′ p) B and C(γ, p) B

S.A. Morrow, J. Arneil, E.C. Aschenauer, M.F. Van Batenburg, H.P. Blok, D.J. Boersma, D. Branford, T. Davinson, G. DeMeyer, J.E. Ducret, W.H.A. Hesselink, D. Groep, K. Hicks, D.G. Ireland, N. Kalantar-Nayestanaki, L. Lapikás, M. Liang, J. Mackenzie, C. Marchand, R. MedagliaJ. Ryckebusch, M. Van Sambeek, R. Starink, G. Van Der Steenhoven, M.A. Van Uden, H. De Vries

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Abstract

A study of the reaction C(e, e′ p) B in parallel kinematics has been made for the missing-momentum region 250 <p <310 MeV/c at incident energies of 379 and 585 MeV. A Rosenbluth separation of the cross sections was carried out to extract the longitudinal and transverse structure functions W and W . Calculations that include meson-exchange currents and isobar currents are seen to describe the data better than those using a one-body current only. For the first time, a comparison between the C(γ, p) cross section and the transverse part of the C(e, e′ p) cross section has been made versus an effective momentum that is defined in such a way as to minimize effects due to differences in final-state interactions. This comparison suggests that it may be possible to describe both reactions in one consistent framework if two-body currents are included.
Original languageEnglish
JournalPhysical Review C
Volume71
Issue number1
DOIs
Publication statusPublished - 1 Jan 2005

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