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THE RARE 𝐷𝑠-MESONS’ DECAYS INTO THREE CHARGED LEPTONS AND NEUTRINOS IN THE FRAMEWORK OF STANDARD MODEL
- Authors: Danilina A.V1,2, Nikitin N.V1,2,3,4
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Affiliations:
- Skobeltsyn Institute of Nuclear Physics
- NRC “Kurchatov Institute” — ITEP
- Lomonosov Moscow State University
- The Moscow Institute of Physics and Technology
- Issue: Vol 87, No 5 (2024)
- Pages: 426-437
- Section: ЭЛЕМЕНТАРНЫЕ ЧАСТИЦЫ И ПОЛЯ. Теория
- URL: https://bakhtiniada.ru/0044-0027/article/view/275055
- DOI: https://doi.org/10.31857/S0044002724050088
- EDN: https://elibrary.ru/JEWBTB
- ID: 275055
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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.
About the authors
A. V Danilina
Skobeltsyn Institute of Nuclear Physics; NRC “Kurchatov Institute” — ITEP
Email: anna.danilina@cern.ch
Moscow, Russia; Moscow, Russia;
N. V Nikitin
Skobeltsyn Institute of Nuclear Physics; NRC “Kurchatov Institute” — ITEP; Lomonosov Moscow State University;The Moscow Institute of Physics and Technology
Email: Nikolai.Nikitine@cern.ch
Moscow, Russia; Moscow, Russia; Moscow, Russia; Dolgoprudny, Moscow Region, Russia
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