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Search for Heavy Neutral Leptons in Events with Three Charged Leptons in Proton-Proton Collisions at sqrts=13  TeV.

08:00 EDT 1st June 2018 | BioPortfolio

Summary of "Search for Heavy Neutral Leptons in Events with Three Charged Leptons in Proton-Proton Collisions at sqrts=13  TeV."

A search for a heavy neutral lepton N of Majorana nature decaying into a W boson and a charged lepton is performed using the CMS detector at the LHC. The targeted signature consists of three prompt charged leptons in any flavor combination of electrons and muons. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV, with an integrated luminosity of 35.9  fb^{-1}. The search is performed in the N mass range between 1 GeV and 1.2 TeV. The data are found to be consistent with the expected standard model background. Upper limits are set on the values of |V_{eN}|^{2} and |V_{μN}|^{2}, where V_{ℓN} is the matrix element describing the mixing of N with the standard model neutrino of flavor ℓ. These are the first direct limits for N masses above 500 GeV and the first limits obtained at a hadron collider for N masses below 40 GeV.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 221801

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