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arXiv 0802.2093nucl-th
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中微子核截面的总体理论模型

Gross Theory Model for Neutrino-Nucleus Cross Section

A. R. Samana, C. A. Barbero, S. B. Duarte, A. J. Dimarco, F. Krmpotić

摘要:

最初由Takahashi和Yamada为$β$ -衰变提出的核总量理论被应用于电子-中微子核反应,对伽莫夫-特勒共振的能量学采用了更现实的描述。模型参数是从最近的实验数据,无论是$β^-$衰变和电子捕获,分别为偶数-偶数,偶数-奇数,奇数-奇数,奇数-偶数核。中微子-核截面的数值估计与以前在微观模型框架内所做的评价相当吻合。这里提出的形式主义可以扩展到重核质量区,弱过程是相当相关的,这是天体物理学的兴趣,因为它在超新星爆炸核合成的应用。

英文摘要:

The nuclear gross theory, originally formulated by Takahashi and Yamada for the $β$-decays, is applied for the electronic-neutrino nucleus reactions, employing a more realistic description to the energetics of the Gamow-Teller resonances. The model parameters are gauged from the most recent experimental data, both for $β^-$ decay and electron-capture, separately for even-even, even-odd, odd-odd, odd-even nuclei. The numerical estimates for neutrino-nucleus cross sections agree fairly well with previous evaluations done within the framework of microscopic models. The formalism presented here can be extended to the heavy nuclei mass region, where weak processes are quite relevant, which is of astrophysical interest because of its applications in supernova explosive nucleosynthesis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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