期刊
PHYSICS LETTERS B
卷 704, 期 5, 页码 379-383出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2011.09.079
关键词
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资金
- LLNL [DE-AC52-07NA27344]
- NSERC [401945-2011]
- UNEDF SCIDAC DOE [DE-FC02-07ER41457]
- Deutsche Forschungsgemeinschaft [SFB 634]
- Helmholtz International Center for FAIR
We apply the ab initio no-core shell model/resonating group method (NCSM/RGM) approach to calculate the cross section of the Be-7(p, gamma)B-8 radiative capture. This reaction is important for understanding the solar neutrino flux. Starting from a selected similarity-transformed chiral nucleon-nucleon interaction that accurately describes two-nucleon data, we performed many-body calculations that simultaneously predict both the normalization and the shape of the S-factor. We study the dependence on the number of Be-7 eigenstates included in the coupled-channel equations and on the size of the harmonic oscillator basis used for the expansion of the eigenstates and of the localized parts of the integration kernels. Our S-factor result at zero energy is on the lower side of, but consistent with, the latest evaluation. (C) 2011 Elsevier B.V. All rights reserved.
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