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New measurement and analysis of the 7Be(p,gamma)8B cross section

F. Hammache·G. Bogaert·P. Aguer·C. Angulo·S. Barhoumi·L. Brillard·J. F. Chemin·G. Claverie·A. Coc·M. Hussonnois·M. Jacotin·J. Kiener·A. Lefebvre·J. N. Scheurer·J. -P. Thibaud·E. Virassamyna"iken
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Abstract

Cross sections for the 7Be(p,gamma)8B reaction have been measured for E_c.m.= 0.35-1.4 MeV using radioactive 7Be targets. Two independent measurements carried out with different beam conditions, different targets and detectors are in excellent agreement. A statistical comparison of these measurements with previous results leads to a restricted set of consistent data. The deduced zero-energy S-factor S(0) is found to be 15-20% smaller than the previously recommended value. This implies a 8B solar neutrino flux lower than previously predicted in various standard solar models.

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F. Hammache, G. Bogaert, P. Aguer, C. Angulo, S. Barhoumi, L. Brillard, J. F. Chemin, G. Claverie, A. Coc, M. Hussonnois, M. Jacotin, J. Kiener, A. Lefebvre, J. N. Scheurer, J. -P. Thibaud, E. Virassamyna"iken. 1997-12-10. New measurement and analysis of the 7Be(p,gamma)8B cross section. https://doi.org/10.1103/physrevlett.80.928

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