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Polarization Transfer in the 4He(e,e'p)3H Reaction at Q^2 = 0.8 and 1.3 (GeV/c)^2

Authors :
Paolone, M.
Malace, S. P.
Strauch, S.
Albayrak, I.
Arrington, J.
Berman, B. L.
Brash, E. J.
Briscoe, B.
Camsonne, A.
Chen, J. -P.
Christy, M. E.
Chudakov, E.
Cisbani, E.
Craver, B.
Cusanno, F.
Ent, R.
Garibaldi, F.
Gilman, R.
Glamazdin, O.
Glister, J.
Higinbotham, D. W.
Hyde-Wright, C. E.
Ilieva, Y.
de Jager, C. W.
Jiang, X.
Jones, M. K.
Keppel, C. E.
Khrosinkova, E.
Kuchina, E.
Kumbartzki, G.
Lee, B.
Lindgren, R.
Margaziotis, D. J.
Meekins, D.
Michaels, R.
Park, K.
Pentchev, L.
Perdrisat, C. F.
Piasetzky, E.
Punjabi, V. A.
Puckett, A. J. R.
Qian, X.
Qiang, Y.
Ransome, R. D.
Saha, A.
Sarty, A. J.
Schulte, E.
Solvignon, P.
Subudi, R. R.
Tang, L.
Tedeschi, D.
Tvaskis, V.
Udias, J. M.
Ulmer, P. E.
Vignote, J. R.
Wesselmann, F. R.
Wojteskhowski, B.
Zhan, X.
Publication Year :
2010
Publisher :
arXiv, 2010.

Abstract

Proton recoil polarization was measured in the quasielastic 4He(e,e'p)3H reaction at Q^2 = 0.8 (GeV/c)^2 and 1.3 (GeV/c)^2 with unprecedented precision. The polarization-transfer coefficients are found to differ from those of the 1H(e,e' p) reaction, contradicting a relativistic distorted-wave approximation, and favoring either the inclusion of medium-modified proton form factors predicted by the quark-meson coupling model or a spin-dependent charge-exchange final-state interaction. For the first time, the polarization-transfer ratio is studied as a function of the virtuality of the proton.

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....1b37020b58a3f0012614931c1fcb0db2
Full Text :
https://doi.org/10.48550/arxiv.1002.2188