Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at √s=13 TeV

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dc.authoridChatterjee, Suman/0000-0003-2660-0349
dc.authoridGonzalez Fernandez, Juan Rodrigo/0000-0002-4825-8188
dc.authoridOsherson, Marc/0000-0002-9760-9976
dc.authoridHussain, Priya Sajid/0000-0002-4825-5278
dc.authoridAkgun, Bora/0000-0001-8888-3562
dc.authoridColaleo, Anna/0000-0002-0711-6319
dc.authoridPerez-Calero Yzquierdo, Antonio/0000-0003-3036-7965
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J. W.
dc.contributor.authorBergauer, T.
dc.contributor.authorChatterjee, S.
dc.contributor.authorDamanakis, K.
dc.date.accessioned2025-03-20T09:50:52Z
dc.date.available2025-03-20T09:50:52Z
dc.date.issued2024
dc.departmentİzmir Bakırçay Üniversitesi
dc.description.abstractA search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138 fb(-1) of proton-proton collisions at root s = 13 TeV, recorded at the CERN LHC in 2016-2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4 GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1-3.0 (1.9-3.3) GeV, reaching mixing matrix element squared values as low as 8.6(4.6) x 10(-6).
dc.identifier.doi10.1103/PhysRevD.110.012004
dc.identifier.issn2469-9985
dc.identifier.issn2469-9993
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85199910657
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.110.012004
dc.identifier.urihttps://hdl.handle.net/20.500.14034/2352
dc.identifier.volume110
dc.identifier.wosWOS:001290702200002
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review C
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250319
dc.subjectNeutrinos
dc.subjectMasses
dc.subjectBounds
dc.titleSearch for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at √s=13 TeV
dc.typeArticle

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