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arXiv · 2111.07076

The $B_c$ lifetime in the Standard Model

Jason Aebischer·Benjamín Grinstein
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Abstract

Using an operator product expansion (OPE) approach an updated Standard Model prediction of the $B_c$ lifetime is presented. The computation in three different mass schemes for the heavy quarks leads to three different values consistent with each other and with experiment. Furthermore a novel way to compute the $B_c$ lifetime is presented, taking differences of $B,D$ and $B_c$ meson decay rates. In this approach the leading contributions from free-quark decays cancel out, leading to a reduction of scale and scheme dependence.

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Jason Aebischer, Benjamín Grinstein. 2021-11-13. The $B_c$ lifetime in the Standard Model. https://arxiv.org/abs/2111.07076

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