dc.contributor.author Sirunyan, A. M. dc.contributor.author Sanders, Stephen J. dc.contributor.author The CMS collaboration dc.date.accessioned 2021-01-14T20:08:30Z dc.date.available 2021-01-14T20:08:30Z dc.date.issued 2019-01-15 dc.identifier.citation The CMS collaboration., Sirunyan, A.M., Tumasyan, A. et al. Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at 𝑠√=13 TeV. J. High Energ. Phys. 2019, 122 (2019). https://doi.org/10.1007/JHEP01(2019)122 en_US dc.identifier.uri http://hdl.handle.net/1808/31136 dc.description This work is licensed under a Creative Commons Attribution 4.0 International License. en_US dc.description.abstract A search is performed for a heavy Majorana neutrino (N), produced in leptonic decay of a W boson propagator and decaying into a W boson and a lepton, with the CMS detector at the LHC. The signature used in this search consists of two same-sign leptons, in any flavor combination of electrons and muons, and at least one jet. The data were collected during 2016 in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The results are found to be consistent with the expected standard model background. Upper limits are set in the mass range between 20 and 1600 GeV in the context of a Type-I seesaw mechanism, on |VeN|2, |VμN|2, and |VeNV *μN|2/(|VeN|2 + |VμN|2), where VℓN is the matrix element describing the mixing of N with the standard model neutrino of flavor ℓ = e, μ. For N masses between 20 and 1600 GeV, the upper limits on |VℓN|2 range between 2.3 × 10−5 and unity. These are the most restrictive direct limits for heavy Majorana neutrino masses above 430 GeV. en_US dc.publisher Springer Verlag en_US dc.rights Copyright CERN, for the benefit of the CMS Collaboration. en_US dc.rights.uri http://creativecommons.org/licenses/by/4.0/ en_US dc.subject Beyond Standard Model en_US dc.subject Hadron-Hadron scattering (experiments) en_US dc.title Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at √𝑠=13 TeV en_US dc.type Article en_US kusw.kuauthor Sanders, Stephen J. kusw.kudepartment Physics and Astronomy en_US dc.identifier.doi 10.1007/JHEP01(2019)122 en_US kusw.oaversion Scholarly/refereed, publisher version en_US kusw.oapolicy This item meets KU Open Access policy criteria. en_US dc.rights.accessrights openAccess en_US
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