Polarization transfer in the 4He(e-->,e'p-->)3H reaction up to Q2=2.6 (GeV/c)2

S Strauch; S Dieterich; K A Aniol; J R M Annand; O K Baker; W Bertozzi; M Boswell; E J Brash; Z Chai; J-P Chen; M E Christy; E Chudakov; A Cochran; R De Leo; R Ent; M B Epstein; J M Finn; K G Fissum; T A Forest; S Frullani; F Garibaldi; A Gasparian; O Gayou; S Gilad; R Gilman; C Glashausser; J Gomez; V Gorbenko; P L J Gueye; J O Hansen; D W Higinbotham; B Hu; C E Hyde-Wright; D G Ireland; C Jackson; C W de Jager; X Jiang; C Jones; M K Jones; J D Kellie; J J Kelly; C E Keppel; G Kumbartzki; M Kuss; J J LeRose; K Livingston; N Liyanage; S Malov; D J Margaziotis; D Meekins; R Michaels; J H Mitchell; S K Nanda; J Nappa; C F Perdrisat; V A Punjabi; R D Ransome; R Roché; G Rosner; M Rvachev; F Sabatie; A Saha; A Sarty; J M Udias; P E Ulmer; G M Urciuoli; J F J van den Brand; J R Vignote; D P Watts; L B Weinstein; K Wijesooriya; B Wojtsekhowski

doi:10.1103/PhysRevLett.91.052301

Polarization transfer in the 4He(e-->,e'p-->)3H reaction up to Q2=2.6 (GeV/c)2

Phys Rev Lett. 2003 Aug 1;91(5):052301. doi: 10.1103/PhysRevLett.91.052301. Epub 2003 Jul 29.

Authors

S Strauch¹, S Dieterich, K A Aniol, J R M Annand, O K Baker, W Bertozzi, M Boswell, E J Brash, Z Chai, J-P Chen, M E Christy, E Chudakov, A Cochran, R De Leo, R Ent, M B Epstein, J M Finn, K G Fissum, T A Forest, S Frullani, F Garibaldi, A Gasparian, O Gayou, S Gilad, R Gilman, C Glashausser, J Gomez, V Gorbenko, P L J Gueye, J O Hansen, D W Higinbotham, B Hu, C E Hyde-Wright, D G Ireland, C Jackson, C W de Jager, X Jiang, C Jones, M K Jones, J D Kellie, J J Kelly, C E Keppel, G Kumbartzki, M Kuss, J J LeRose, K Livingston, N Liyanage, S Malov, D J Margaziotis, D Meekins, R Michaels, J H Mitchell, S K Nanda, J Nappa, C F Perdrisat, V A Punjabi, R D Ransome, R Roché, G Rosner, M Rvachev, F Sabatie, A Saha, A Sarty, J M Udias, P E Ulmer, G M Urciuoli, J F J van den Brand, J R Vignote, D P Watts, L B Weinstein, K Wijesooriya, B Wojtsekhowski

Affiliation

¹ Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.

PMID: 12906589
DOI: 10.1103/PhysRevLett.91.052301

Abstract

We have measured the proton recoil polarization in the 4He(e-->,e(')p-->)4H reaction at Q(2)=0.5, 1.0, 1.6, and 2.6 (GeV/c)(2). The measured ratio of polarization transfer coefficients differs from a fully relativistic calculation, favoring the inclusion of a medium modification of the proton form factors predicted by a quark-meson coupling model. In addition, the measured induced polarizations agree reasonably well with the fully relativistic calculation indicating that the treatment of final-state interactions is under control.