Measurement of the exclusive 3He(e,e'p) reaction below the quasielastic peak

• Published in: Physical review letters Vol. 93; no. 13; p. 132301
• Main Authors: Kozlov, A, Sarty, A J, Aniol, K A, Bartsch, P, Baumann, D, Bertozzi, W, Bohinc, K, Böhm, R, Chen, J P, Dale, D, Dennis, L, Derber, S, Ding, M, Distler, M O, Dragovitsch, P, Ewald, I, Fissum, K G, Friedrich, J, Friedrich, J M, Geiges, R, Gilad, S, Jennewein, P, Kahrau, M, Kohl, M, Krygier, K W, Liesenfeld, A, Margaziotis, D J, Merkel, H, Merle, P, Müller, U, Neuhausen, R, Pospischil, T, Potokar, M, Riccardi, G, Roché, R, Rosner, G, Rowntree, D, Schmieden, H, Sirca, S, Templon, J A, Thompson, M N, Wagner, A, Walcher, Th, Weis, M, Zhao, J, Zhou, Z-L, Golak, J, Glöckle, W, Witała, H
• Format: Journal Article
• Language: English
• Published: United States 24.09.2004
• ISSN: 0031-9007

New, high-precision measurements of the 3He(e,e(')p) reaction using the A1 Collaboration spectrometers at the Mainz microtron MAMI are presented. These were performed in antiparallel kinematics at energy transfers below the quasielastic peak, and at a central momentum transfer of 685 MeV/c. Cross sections and distorted momentum distributions were extracted and compared to theoretical predictions and existing data. The longitudinal and transverse behavior of the cross section was also studied. Sizable differences in the cross-section behavior from theoretical predictions based on the plane wave impulse approximation were observed in both the two- and three-body breakup channels. Full Faddeev-type calculations account for some of the observed excess cross-section, but significant differences remain.