Measurement of the asymmetries in 3 $ \overrightarrow{\sf He}$ (¯e, e′p)d and 3 $ \overrightarrow{\sf He}$ (¯e, e′p)np

J.M. Friedrich, W. Glöckle, A. Hügli, Y. Goussev, S. Stave, G. Jover Ma nas, D. Bosnar, M. Potokar, H. Wöhrle, Werner Heil, P. Grabmayr, A. Ott, Daniela Rohe, L. Nungesser, M. O. Distler, U. Müller, Ingo Sick, Harald Merkel, P. Jennewein, Hiroyuki Kamada, Th. Walcher, J. Schmiedeskamp, B. Boillat, Patrick Achenbach, Michael Seimetz, R. Neuhausen, C. Micheli, T. Klechneva, R. Trojer, D. Rudersdorf, M. Weis, Ernst-Wilhelm Otten, J. Jourdan, D. Baumann, Mihael Makek, R. Pérez Benito, C. Carasco, F. Parpan, G. Testa, Jacek Golak, Roman Skibiński, J. G. Llongo, M. Lloyd, Andreas Nogga, M. Ding, Henryk Witała, B. Krusche, Simon Širca, R. Böhm, K. W. Krygier, Ch. Normand

doi:10.48550/arxiv.nucl-ex/0505012

説明

The electron-target-asymmetries A_parallel and A_perpendicular with target spin parallel and perpendicular to the momentum transfer q were measured for both the two-- and three-body breakup of 3He in the 3He(e,e'p)-reaction. Polarized electrons were scattered off polarized 3He in the quasielastic regime in parallel kinematics with the scattered electron and the knocked-out proton detected using the Three-Spectrometer-Facility at MAMI. The results are compared to Faddeev calculations which take into account Final State Interactions as well as Meson Exchange Currents. The experiment confirms the prediction of a large effect of Final State Interactions in the asymmetry of the three-body breakup and of an almost negligible one for the two-body breakup.

accepted by Eur. Phys. Journal A

収録刊行物

The European Physical Journal A

The European Physical Journal A 25 177-183, 2005-08-01

Springer Science and Business Media LLC

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詳細情報詳細情報について

CRID: 1870583642698507136

DOI: 10.1140/epja/i2005-10115-2; 10.48550/arxiv.nucl-ex/0505012

ISSN: 1434601X; 14346001

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