A precise extraction of the induced polarization in the 4He(e,e'p)3H reaction

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.106.052501· OSTI ID:1004570

S.P. Malace, M. Paolone, S. Strauch

We measured with unprecedented precision the induced polarization Py in 4He(e,e'p)3H at Q^2 = 0.8 (GeV/c)^2 and 1.3 (GeV/c)^2. The induced polarization is indicative of reaction-mechanism effects beyond the impulse approximation. Our results are in agreement with a relativistic distorted-wave impulse approximation calculation but are over-estimated by a calculation with strong charge-exchange effects. Our data are used to constrain the strength of the spin independent charge-exchange term in the latter calculation.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1004570
• Report Number(s): JLAB-PHY-10-1234; DOE/OR/23177-1426; arXiv:1011.4483; PRLTAO; TRN: US201103%%389
• Journal Information: Phys.Rev.Lett., Vol. 106; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCURACY
CHARGE EXCHANGE
IMPULSE APPROXIMATION
POLARIZATION
SPIN