Quasielastic He3(e,e′p)H2 reaction at Q2=1.5GeV2 for recoil momenta up to 1GeV/c

M. M. Rvachev, F. Benmokhtar, E. Penel-Nottaris, K. A. Aniol, W. Bertozzi, W. U. Boeglin, F. Butaru, J. R. Calarco, Z. Chai, C. C. Chang, J. P. Chen, E. Chudakov, E. Cisbani, A. Cochran, J. Cornejo, Sonja Dieterich, P. Djawotho, W. Duran, M. B. Epstein, J. M. FinnK. G. Fissum, A. Frahi-Amroun, S. Frullani, C. Furget, F. Garibaldi, O. Gayou, S. Gilad, R. Gilman, C. Glashausser, J. O. Hansen, D. W. Higinbotham, A. Hotta, B. Hu, M. Iodice, R. Iomni, C. W. De Jager, X. Jiang, M. K. Jones, J. J. Kelly, S. Kox, M. Kuss, J. M. Laget, R. De Leo, J. J. Lerose, E. Liatard, R. Lindgren, N. Liyanage, R. W. Lourie, S. Malov, D. J. Margaziotis, P. Markowitz, F. Merchez, R. Michaels, J. Mitchell, J. Mougey, C. F. Perdrisat, V. A. Punjabi, G. Quéméner, R. D. Ransome, J. S. Réal, R. Roché, F. Sabatié, A. Saha, D. Simon, S. Strauch, R. Suleiman, T. Tamae, J. A. Templon, R. Tieulent, H. Ueno, P. E. Ulmer, G. M. Urciuoli, E. Voutier, K. Wijesooriya, B. Wojtsekhowski

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36 Scopus citations


We have studied the quasielastic He3(e,e′p)H2 reaction in perpendicular coplanar kinematics, with the energy and the momentum transferred by the electron fixed at 840 MeV and 1502MeV/c, respectively. The He3(e,e′p)H2 cross section was measured for missing momenta up to 1000MeV/c, while the ATL asymmetry was extracted for missing momenta up to 660MeV/c. For missing momenta up to 150MeV/c, the cross section is described by variational calculations using modern He3 wave functions. For missing momenta from 150 to 750MeV/c, strong final-state interaction effects are observed. Near 1000MeV/c, the experimental cross section is more than an order of magnitude larger than predicted by available theories. The ATL asymmetry displays characteristic features of broken factorization with a structure that is similar to that generated by available models.

Original languageEnglish (US)
Article number192302
JournalPhysical Review Letters
Issue number19
StatePublished - May 20 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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