Investigation of the exclusive He-3(e,e ' pp)n reaction

Groep, D.L. et al. (2001) Investigation of the exclusive He-3(e,e ' pp)n reaction. Physical Review C, 63(1), art 014005. (doi: 10.1103/PhysRevC.63.014005)

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Cross sections for the He-3(e,e'pp)n reaction were measured over a wide range of energy and three-momentum transfer. At a momentum transfer q=375 MeV/c, data were taken at transferred energies omega ranging from 170 to 290 MeV. At omega = 220 MeV, measurements were performed at three q values (305, 375, and 445 MeV/c). The results are presented as a function of the neutron momentum in the final state, as a function of the energy and momentum transfer, and as a function of the relative momentum of the two-proton system. The data at neutron momenta below 100 MeV/c, obtained for two values of the momentum transfer at omega = 220 MeV, are well described by the results of continuum-Faddeev calculations. These calculations indicate that the cross section in this domain is dominated by direct two-proton emission induced by a one-body hadronic current. Cross section distributions determined as a function of the relative momentum of the two protons are fairly well reproduced by continuum-Faddeev calculations based on various realistic nucleon-nucleon potential models. At higher neutron momentum and at higher energy transfer, deviations between data and calculations are observed that may be due to contributions of isobar currents.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Ireland, Professor David
Authors: Groep, D.L., van Batenburg, M.F., Bauer, T.S., Blok, H.P., Boersma, D.J., Cisbani, E., De Leo, R., Frullani, S., Garibaldi, F., Glockle, W., Golak, J., Heimberg, P., Hesselink, W.H.A., Iodice, M., Ireland, D.G., Jans, E., Kamada, H., Lapikas, L., Lolos, G.J., Onderwater, C.J.G., Perrino, R., Scott, A., Starink, R., Steenbakkers, M.F.M., Urciuoli, G.M., de Vries, H., Weinstein, L.B., and Witala, H.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review C

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