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arXiv · 1911.03670

Decays of charged $B$-mesons into three charged leptons and a neutrino

A. Danilina·N. Nikitin·K. Toms
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Abstract

In the framework of the Standard Model we present predictions for partial widths, double and single differential distributions, and forward--backward lepton asymmetries for four-leptonic decays $B^- \to μ^+μ^- {\bar ν}_e\, e^-$, $B^- \to e^+ e^- {\bar ν}_μ\,μ^-$, $B^- \to μ^+ μ^-{\bar ν}_μ\,μ^-$, and $B^- \to e^+ e^- {\bar ν}_e\, e^-$. We consider the contributions of virtual photon emission from the light and heavy quarks of the $B^-$--meson, and we include bremsstrahlung of a virtual photon from the charged lepton in the final state. We use the model of vector meson dominance for calculation of virtual photon emission by the light quark of the $B^-$--meson and take into account the isotopic correction.

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A. Danilina, N. Nikitin, K. Toms. 2019-11-09. Decays of charged $B$-mesons into three charged leptons and a neutrino. https://doi.org/10.1103/physrevd.101.096007

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