HAL : in2p3-00206682, version 1

arXiv : nucl-ex/0605006

DOI : 10.1103/PhysRevC.75.034003

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Physical Review C 75 (2007) 034003

Extraction of the Neutron Magnetic Form Factor from Quasi-Elastic 3He(pol)(e(pol),e') at Q^2 = 0.1 - 0.6 (GeV/c)^2

B. Anderson, L. Auberbach, T. Averett, W. Bertozzi, T. Black, J. Calarco, L. Cardman, G.D. Cates, Z.W. Chai, J.P. Chen, Seonho Choi, E. Chudakov, S. Churchwell, G.S. Corrado, C. Crawford, D. Dale, A. Deur1, P. Djawotho, D. Dutta, J.M. Finn, H. Gao, R. Gilman, A.V. Glamazdin, C. Glashausser, W. Glockle, J. Golak, J. Gomez, V.G. Gorbenko, J.O. Hansen, F.W. Hersman, D.W. Higinbotham, R. Holmes, C.R. Howell, E. Hughes, B. Humensky, S. Incerti2, C.W. de Jager, J.S. Jensen, X. Jiang, C.E. Jones, M. J. Jones, R. Kahl, H. Kamada, A. Kievsky, I. Kominis, W. Korsch, K. Kramer, G. Kumbartzki, M. Kuss, E. Lakuriqi, M. Liang, N. Liyanage, J. LeRose, S. Malov, D.J. Margaziotis, J.W. Martin, K. McCormick, R.D. McKeown, K. McIlhany, Z.E. Meziani, R. Michaels, G.W. Miller, J. Mitchell, S. Nanda, E. Pace, T. Pavlin, G.G. Petratos, R.I. Pomatsalyuk, D. Pripstein, D. Prout, R.D. Ransome, Y. Roblin1, M. Rvachev, A. Saha, G. Salmè, M. Schnee, J. Seely, T. Shin, K. Slifer, P.A. Souder, S. Strauch, R. Suleiman, M. Sutter, B. Tipton, L. Todor, M. Viviani, B. Vlahovic, J. Watson, C.F. Williamson, H. Witala, B. Wojtsekhowski, F. Xiong, W. Xu, J. Yeh, P. Zolnierczuk

Jefferson Lab E95-001 Collaboration(s)

(2007)

We have measured the spin-dependent transverse asymmetry, A_T', in quasi-elastic inclusive electron scattering from polarized 3He with high precision at Q^2 = 0.1 to 0.6 (GeV/c)^2. The neutron magnetic form factor, GMn, was extracted at Q^2 = 0.1 and 0.2 (GeV/c)^2 using a non-relativistic Faddeev calculation that includes both final-state interactions (FSI) and meson-exchange currents (MEC). In addition, GMn was extracted at Q^2 = 0.3 to 0.6 (GeV/c)^2 using a Plane Wave Impulse Approximation calculation. The accuracy of the modeling of FSI and MEC effects was tested and confirmed with a precision measurement of the spin-dependent asymmetry in the breakup threshold region of the 3He(pol)(e(pol),e') reaction. The total relative uncertainty of the extracted GMn data is approximately 3%. Close agreement was found with other recent high-precision GMn data in this Q^2 range.

1 :	LPC-CLERMONT - Laboratoire de Physique Corpusculaire de Clermont-Ferrand
2 :	CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

Thème(s)

:

Physique/Physique Nucléaire Expérimentale

in2p3-00206682, version 1

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Contributeur : Ludovic Le Noan <>

Déposé pour le compte de : Sébastien Incerti <>

Soumis le : Jeudi 17 Janvier 2008, 13:19:03

Dernière modification le : Jeudi 17 Janvier 2008, 13:29:25