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arXiv · 1105.5977

Ab initio many-body calculation of the 7Be(p,gamma)8B radiative capture

Petr Navratil·Robert Roth·Sofia Quaglioni
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Abstract

We apply the ab initio no-core shell model/resonating group method (NCSM/RGM) approach to calculate the cross section of the 7Be(p,gamma)8B 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 parameter-free many-body calculations that simultaneously predict both the normalization and the shape of the S-factor. We study the dependence on the number of 7Be 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.

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Petr Navratil, Robert Roth, Sofia Quaglioni. 2011-05-30. Ab initio many-body calculation of the 7Be(p,gamma)8B radiative capture. https://doi.org/10.1016/j.physletb.2011.09.079

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