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Calculation on the Lifetime of Polarized Muons in Flight

Zhi-Qiang Shi·Ni Guang-Jiong
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Abstract

The fermion lifetime was usually calculated in terms of spin states. However, after comparing spin states with helicity states and chirality states, it is pointed out that a spin state is helicity degenerate, and so it can not be used for discussion of the dependence of lifetime on the polarization of an initial-state fermion. Using helicity states, we calculate the lifetime of polarized muons. The result shows that the lifetime of right-handed polarized muons is always greater than that of left-handed polarized muons with the same speed in flight.

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Zhi-Qiang Shi, Ni Guang-Jiong. 2006-02-02. Calculation on the Lifetime of Polarized Muons in Flight. https://arxiv.org/abs/hep-ph/0211051

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