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

Malace, S P; Paolone, M; 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; Subedi, R R; Tang, L

Malace, S P; Paolone, M; 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; Subedi, R R; Tang, L.

Affiliation

Malace SP; University of South Carolina, Columbia, South Carolina 29208, USA.

Phys Rev Lett ; 106(5): 052501, 2011 Feb 04.

Article in En | MEDLINE | ID: mdl-21405386

ABSTRACT

ABSTRACT

We measured with unprecedented precision the induced polarization P(y) in (4)He(e,e'p)(3)H at Q(2)=0.8 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 overestimated 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.

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Database: MEDLINE Language: En Year: 2011 Type: Article

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Database: MEDLINE Language: En Year: 2011 Type: Article