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Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$

A search for a type-III seesaw signal in events with three or more electrons or muons is presented. The data sample corresponds to $35.9~\mathrm{fb}^{-1}$ of integrated luminosity in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$ collected by the CMS experiment at the LHC in 2016. The signal is sough...

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Autor principal: CMS Collaboration
Publicado: 2017
Materias:
Acceso en línea:http://cds.cern.ch/record/2256657
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description A search for a type-III seesaw signal in events with three or more electrons or muons is presented. The data sample corresponds to $35.9~\mathrm{fb}^{-1}$ of integrated luminosity in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$ collected by the CMS experiment at the LHC in 2016. The signal is sought after in final states with at least three leptons, and has diverse kinematic properties. The primary selection is based on the number of leptons and the invariant mass of opposite-sign lepton pairs, and helps discriminate the signal against the standard model background. The final optimization for the type-III seesaw signal is based on the sum of leptonic transverse momenta and missing transverse energy, as well as the transverse mass. The observations are consistent with expectations from standard model processes. The results are used to exclude heavy fermions of the type-III seesaw model with masses below $850~\mathrm{GeV}$ for the lepton-flavor democratic scenario.
id cern-2256657
institution Organización Europea para la Investigación Nuclear
publishDate 2017
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spelling cern-22566572019-09-30T06:29:59Zhttp://cds.cern.ch/record/2256657CMS CollaborationSearch for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$Particle Physics - ExperimentA search for a type-III seesaw signal in events with three or more electrons or muons is presented. The data sample corresponds to $35.9~\mathrm{fb}^{-1}$ of integrated luminosity in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$ collected by the CMS experiment at the LHC in 2016. The signal is sought after in final states with at least three leptons, and has diverse kinematic properties. The primary selection is based on the number of leptons and the invariant mass of opposite-sign lepton pairs, and helps discriminate the signal against the standard model background. The final optimization for the type-III seesaw signal is based on the sum of leptonic transverse momenta and missing transverse energy, as well as the transverse mass. The observations are consistent with expectations from standard model processes. The results are used to exclude heavy fermions of the type-III seesaw model with masses below $850~\mathrm{GeV}$ for the lepton-flavor democratic scenario.CMS-PAS-EXO-17-006oai:cds.cern.ch:22566572017
spellingShingle Particle Physics - Experiment
CMS Collaboration
Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
title Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
title_full Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
title_fullStr Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
title_full_unstemmed Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
title_short Search for evidence of Type-III seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{TeV}$
title_sort search for evidence of type-iii seesaw mechanism in multilepton final states in pp collisions at $\sqrt{s} = 13~\mathrm{tev}$
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2256657
work_keys_str_mv AT cmscollaboration searchforevidenceoftypeiiiseesawmechanisminmultileptonfinalstatesinppcollisionsatsqrts13mathrmtev