Long-lived heavy neutral leptons from mesons in effective field theory

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dc.contributor.authorBeltran Rebeca
dc.contributor.authorCottin Giovanna
dc.contributor.authorCarlos Helo Juan
dc.contributor.authorHirsch Martin
dc.contributor.authorTitov Arsenii
dc.contributor.authorWang Zeren Simon
dc.date.accessioned2025-05-19T16:37:52Z
dc.date.available2025-05-19T16:37:52Z
dc.date.issued2023/01/04
dc.description.abstractIn the framework of the low-energy effective field theory of the Standard Model extended with heavy neutral leptons (HNLs), we calculate the production rates of HNLs from meson decays triggered by dimension-six operators. We consider both lepton number-conserving and lepton-number-violating four-fermion operators involving either a pair of HNLs or a single HNL. Assuming that HNLs are long-lived, we perform simulations and investigate the reach of the proposed far detectors at the high-luminosity LHC to (i) active-heavy neutrino mixing and (ii) the Wilson coefficients associated with the effective operators, for HNL masses below the mass of the B-meson. We further convert the latter to the associated new-physics scales. Our results show that scales in excess of hundreds of TeV and the active-heavy mixing squared as small as 10(-15 )can be probed by these experiments.
dc.identifier.doihttp://dx.doi.org/10.1007/JHEP01(2023)015
dc.identifier.issn1029-8479
dc.identifier.urihttps://publicacionesabiertas.userena.cl/handle/123456789/271
dc.languageEnglish
dc.publisherSPRINGER
dc.subjectNEUTRINOS, SEARCH
dc.titleLong-lived heavy neutral leptons from mesons in effective field theory
dc.typeArticle

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