Measurement of quasi-elastic 12C(p,2p) scattering at high momentum transfer
/ Authors
Y. Mardor, J. Aclander, J. Alster, D. Barton, G. Bunce, A. Carroll, N. Christensen, H. Courant, S. Durrant, S. Gushue
and 15 more authors
S. Heppelmann, E. Kosonovsky, I. Mardor, M. Marshak, Y. Makdisi, E. Minor, I. Navon, H. Nicholson, E. Piasetzky, T. Roser, J. Russell, C. Sutton, M. Tanaka, C. White, J. Wu
/ Abstract
Abstract We measured the high-momentum transfer [Q2=4.8 and 6.2 (GeV/c)2] quasi-elastic 12 C(p,2p) reaction at θcm≃90° for 6 and 7.5 GeV/c incident protons. The momentum components of both outgoing protons and the missing energy and momentum of the proton in the nucleus were measured. We verified the validity of the quasi-elastic picture for ground state momenta up to about 0.5 GeV/c. Transverse and longitudinal momentum distributions of the target proton were measured. They have the same shape with a large momentum tail which is not consistent with independent particle models. We observed that the transverse distribution gets wider as the longitudinal component increases in the beam direction.
Journal: Physics Letters B