THE RARE 𝐷𝑠-MESONS’ DECAYS INTO THREE CHARGED LEPTONS AND NEUTRINOS IN THE FRAMEWORK OF STANDARD MODEL

Abstract

In the framework of the Standard Model, the values of branching ratios and differential distributions for four-lepton decays 𝐷𝑠− → µ+µ−¯ν𝑒 𝑒− and 𝐷𝑠− → 𝑒+𝑒−¯νµ µ− are found. In our calculations we took into account the processes of a virtual photon emission by 𝑠- and 𝑐-quarks of the 𝐷𝑠−-meson and bremsstrahlung. The emission of a virtual photon by 𝑠-quark have been described using the vector mesons dominance model.

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DOI

10.31857/s0044002724050088

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