Bulg. J. Phys. vol.44 no.S1 (2017), pp. 071-080



Probing for High Momentum Protons in 4He via the 4He(e,e'p)3H Reaction

M.V. Ivanov1, J.M. Udías2, S. Iqbal3, N. See3, K. Aniol3, F. Benmokhtar4, D. Finton4, D. Higinbotham5, SRC Collaboration
1Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria
2Grupo de Física Nuclear, Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, CEI Moncloa, Madrid, Spain
3California State University at Los Angeles, Los Angeles, California, USA
4Duquesne University, Pittsburgh, Pennsylvania, USA
5Thomas Jefferson National Accelerator Facility, Newport News, Virginia, USA
Abstract. The relativistic distorted-wave impulse approximation (RDWIA) is used to describe the 4He(e,e'p)3H process. The 4He ground state is determined within a relativistic mean field bound state fit to elastic electron scattering data. The nucleons are described by solutions of the Dirac equation with scalar and vector (SV) potentials. The wave function of the outgoing proton is obtained by solving the Dirac equation with a SV optical potential fitted to elastic proton scattering data on the residual nucleus. Experimental cross sections for the 3-body breakup 4He(e,e'p)3H up to pmiss = 0.632 GeV/c at xB = 1.24 and Q2 = 2 (GeV/c)2 are compared to the RDWIA calculations.

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