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arXiv 1407.6527hep-phhep-th
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用“世界线瞬子”方法研究中性粒子在磁场中的衰变

A study of neutral particle decay in magnetic field with the "Worldline Instanton" approach

Petr Satunin

摘要:

利用半经典的“世界线瞬子”方法研究了外磁场中中微子衰变为电子和$W$ -玻色子的过程。由于只对主导指数因子感兴趣,我们在一个玩具模型中进行计算,将所有粒子视为标量。该计算确定反应的有效阈值能量作为磁场的函数。讨论了可能的天体物理应用。指出该方法具有一般性,适用于任意中性粒子在外电磁场中衰变为带电粒子的情形。

英文摘要:

We study the process of neutrino decay to electron and $W$-boson in the external magnetic field using the semiclassical "worldline instanton" approach. Being interested only in the leading exponential factor, we make calculations in a toy model, treating all particles as scalars. This calculation determines the effective threshold energy of the reaction as a function of the magnetic field. Possible astrophysical applications are discussed. It is emphasized that the method is general and is applicable to a decay of an arbitrary neutral particle into charged ones in the external electromagnetic field.

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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