Mostrar el registro sencillo del ítem
Flavor violating leptonic decays of τ and μ leptons in the Standard Model with massive neutrinos
dc.contributor.author | Hernández Tomé, G. | |
dc.contributor.author | López Castro, Gabriel | |
dc.contributor.author | Roig, P. | |
dc.date.accessioned | 2020-02-04T11:15:57Z | |
dc.date.available | 2020-02-04T11:15:57Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Hernández-Tomé, G., Castro, G. L., & Roig, P. (2019). Flavor violating leptonic decays of τ and μ leptons in the Standard Model with massive neutrinos. The European Physical Journal C, 79(1), 84. | es_ES |
dc.identifier.uri | http://hdl.handle.net/10481/59405 | |
dc.description.abstract | We have revisited the computations of the flavor violating leptonic decays of the τ and μ leptons into three lighter charged leptons in the Standard Model with massive neutrinos. We were driven by a claimed unnaturally large branching ratio predicted for the τ − → μ − l + l − (l = μ, e) decays (Pham, Eur Phys J C 8:513 1999), which was at odds with the corresponding predictions for the μ − → e−e−e+ processes (Petcov, Sov J Nucl Phys 25:340 1977). In contrast with the prediction in [17], our results are strongly suppressed and in good agreement with the approximationmade in Ref. [15], where masses and momenta of the external particles were neglected in order to deal with the loop integrals. However -as a result of keeping external momenta and masses in the computation of the dominant penguin and box diagrams- we even find slightly smaller branching fractions. Therefore, we confirm that any future observation of such processes would be an unambiguous manifestation of new physics beyond the Standard Model. | es_ES |
dc.description.sponsorship | Finally, we also acknowledge support from Conacyt through projects FOINS-296-2016 (Fronteras de la Ciencia), and 236394 and 250628 (Ciencia Básica). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Springer Nature | es_ES |
dc.rights | Atribución 3.0 España | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.title | Flavor violating leptonic decays of τ and μ leptons in the Standard Model with massive neutrinos | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.identifier.doi | 10.1140/epjc/s10052-019-6563-4 |