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arXiv 2006.00689nucl-thhep-phnucl-ex
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μ子俘获率:准粒子随机相位近似下的评价

Muon capture rates: Evaluation within the Quasiparticle Random Phase Approximation

Fedor Simkovic, Rastislav Dvornicky, Petr Vogel

摘要:

准粒子随机相位近似(QRPA)用于评估参与双β衰变的最终核的总μ子捕获率。根据使用的单粒子模型空间的大小,或处理的初始绑定μ子波函数的方法的几个变种。由此产生的捕获率都相当接近。特别是,似乎是最现实的变体,结果与实验值吻合得很好。不需要轴向电流耦合常数$g_A$的经验猝灭。其标准值$g_A$ = 1.27似乎是足够的。

英文摘要:

The Quasiparticle Random Phase Approximation (QRPA) is used in evaluation of the total muon capture ratesfor the final nuclei participating in double-beta decay. Several variants of the method are used, depending on the size of the single particle model space used, or treatment of the initial bound muon wave function. The resulting capture rates are all reasonably close to each other. In particular, the variant that appears to be most realistic, results in rates in good agreement with the experimental values. There is no necessity for an empirical quenching of the axial current coupling constant $g_A$. Its standard value $g_A$ = 1.27 seems to be adequate.

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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