The reaction He-4(<(gamma)over right arrow>,pi(0))He-4 has been studied with the LEGS tagged, polarized gamma-ray beam, Data are presented at laboratory angles of 31 degrees, 45 degrees, 72.5 degrees, 90 degrees, 110 degrees and 130 degrees for incoming photon energies of 206, 219, 232, 245, 259, 274, 289, 306 and 322 MeV. The unpolarized cross sections are compared with the Delta-hole theoretical model results available in literature. The measured photon beam asymmetry is -1 as expected from conservation of angular momentum and parity. (C) 1999 Published by Elsevier Science B.V.

Bellini, V., Capogni, M., Caracappa, A., Casano, L., D'Angelo, A., Ghio, F., et al. (1999). Coherent pi(0) photo-production on He-4 at intermediate energies with polarized photons, 646, 55-66 [10.1016/S0375-9474(98)00628-9].

Coherent pi(0) photo-production on He-4 at intermediate energies with polarized photons

D'ANGELO, ANNALISA;SCHAERF, CARLO;
1999-01-01

Abstract

The reaction He-4(<(gamma)over right arrow>,pi(0))He-4 has been studied with the LEGS tagged, polarized gamma-ray beam, Data are presented at laboratory angles of 31 degrees, 45 degrees, 72.5 degrees, 90 degrees, 110 degrees and 130 degrees for incoming photon energies of 206, 219, 232, 245, 259, 274, 289, 306 and 322 MeV. The unpolarized cross sections are compared with the Delta-hole theoretical model results available in literature. The measured photon beam asymmetry is -1 as expected from conservation of angular momentum and parity. (C) 1999 Published by Elsevier Science B.V.
1999
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
He-4((gamma)over-bar,pi(0))He-4, E-gamma = 206-322 MeV; results for the unpolarized cross sections provide a useful test of the Delta-hole model theory; measured photon beam asymmetry is -1 as expected for this reaction
http://www.sciencedirect.com/science/article/pii/S0375947498006289
Bellini, V., Capogni, M., Caracappa, A., Casano, L., D'Angelo, A., Ghio, F., et al. (1999). Coherent pi(0) photo-production on He-4 at intermediate energies with polarized photons, 646, 55-66 [10.1016/S0375-9474(98)00628-9].
Bellini, V; Capogni, M; Caracappa, A; Casano, L; D'Angelo, A; Ghio, F; Girolami, B; Hoblit, S; Hu, L; Khandaker, M; Kistner, O; Miceli, L; Moricciani, D; Sandorfi, A; Schaerf, C; Sperduto, M; Thorn, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/96550
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