Neutrino Nucleus Reactions based on New Shell Model Hamiltonians

Details Neutrino Nucleus Reactions based on New Shell Model Hamiltonians Neutrino Nucleus Reactions based on New Shell Model Hamiltonians

2006-08-25

arxiv.org/abs/nucl-th/0608056v1

Phys.Rev.C74:034307,2006

Physics

Nuclear Physics

Nuclear Theory

11 pages, 14 eps-figures, to be published in Physical Review C (in press)

Scientific paper

10.1103/PhysRevC.74.034307

A new shell model Hamiltonian for p-shell nuclei which properly takes into account important roles of spin-isospin interactions is used to obtain cross sections of neutrino-^12C reactions induced by decay-at-rest (DAR) neutrinos as well as supernona neutrinos. Branching ratios to various decay channels are calculated by the Hauser-Feshbach theory. Neutrino-^4He reactions are also investigated by using recent shell model Hamiltonians. The reaction cross sections are found to be enhanced for both ^12C and ^4He compared with previous calculations. As an interesting consequence of this, a possible enhancement of the production yields of light elements, ^7Li and ^11B, during supernova explosions is pointed out.

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