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arXiv 2204.12971nucl-thhep-phnucl-ex
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双Gamow-Teller跃迁及其与无中微子双β衰变关联的从头算研究

Ab initio studies of double Gamow-Teller transition and its correlation with neutrinoless double beta decay

J. M. Yao, I. Ginnett, A. Belley, T. Miyagi, R. Wirth, S. Bogner, J. Engel, H. Hergert, J. D. Holt, S. R. Stroberg

摘要:

利用手征相互作用和几种{ \em ab initio}方法计算了一系列同位素基态到基态的双Gamow-Teller跃迁的核矩阵元,并探讨了这些核矩阵元与轻Majorana中微子交换产生的无中微子双β衰变的核矩阵元之间的相关性.当我们考虑了{ \em ab initio}计算的所有同位旋守恒跃迁和同位旋变化跃迁的NME时,我们得到了很强的相关性.然而,对于实验相关的同位旋变化跃迁本身,相关性较弱,可能无助于减少无中微子双β衰变的NME的不确定性。

英文摘要:

We use chiral interactions and several {\em ab initio} methods to compute the nuclear matrix elements (NMEs) for ground-state to ground-state double Gamow-Teller transitions in a range of isotopes, and explore the correlation of these NMEs with those for neutrinoless double beta decay produced by the exchange of a light Majorana neutrino. When all the NMEs of both isospin-conserving and isospin-changing transitions from the {\em ab initio} calculations are considered, the correlation is strong. For the experimentally relevant isospin-changing transitions by themselves, however, the correlation is weaker and may not be helpful for reducing the uncertainty in the NMEs for neutrinoless double-beta decay.

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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