{"title":"Rare Decays of \\({D_{s}}\\) Mesons to Three Charged Leptons and a Neutrino within the Standard Model","authors":"A. V. Danilina, N. V. Nikitin","doi":"10.1134/S1063778824700583","DOIUrl":null,"url":null,"abstract":"<p>The branching ratios of the four-lepton decays <span>\\(D_{s}^{-}\\to\\mu^{+}\\mu^{-}{\\bar{\\nu}}_{e}e^{-}\\)</span> and <span>\\(D_{s}^{-}\\to e^{+}e^{-}{\\bar{\\nu}}_{\\mu}\\mu^{-}\\)</span> are found on the basis of the Standard Model, and the respective single-differential distributions are obtained and analyzed within this framework. The contributions of virtual-photon emission by the <span>\\(s\\)</span> and <span>\\(c\\)</span> quarks of the <span>\\(D_{s}^{-}\\)</span> meson and virtual-photon bremsstrahlung by a final-state charged lepton are taken into account in the calculations. Virtual-photon emission by the <span>\\(s\\)</span> quark is described on the basis of the vector-meson-dominance model.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":null,"pages":null},"PeriodicalIF":0.3000,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Atomic Nuclei","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063778824700583","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The branching ratios of the four-lepton decays \(D_{s}^{-}\to\mu^{+}\mu^{-}{\bar{\nu}}_{e}e^{-}\) and \(D_{s}^{-}\to e^{+}e^{-}{\bar{\nu}}_{\mu}\mu^{-}\) are found on the basis of the Standard Model, and the respective single-differential distributions are obtained and analyzed within this framework. The contributions of virtual-photon emission by the \(s\) and \(c\) quarks of the \(D_{s}^{-}\) meson and virtual-photon bremsstrahlung by a final-state charged lepton are taken into account in the calculations. Virtual-photon emission by the \(s\) quark is described on the basis of the vector-meson-dominance model.
期刊介绍:
Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.