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Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV

A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of 4.98 fb$^{-1}$ of pp collisions at a centre-of- mass energy of 7 TeV collected with the CMS de...

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Detalles Bibliográficos
Autor principal: Giordano, Ferdinando
Lenguaje:eng
Publicado: 2013
Materias:
Acceso en línea:http://cds.cern.ch/record/1537430
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author Giordano, Ferdinando
author_facet Giordano, Ferdinando
author_sort Giordano, Ferdinando
collection CERN
description A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of 4.98 fb$^{-1}$ of pp collisions at a centre-of- mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, $|V_{lN}|^2$, for $l=e, μ$ as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorana-neutrino mixing for $m_N>90$ GeV.
id cern-1537430
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15374302019-09-30T06:29:59Zhttp://cds.cern.ch/record/1537430engGiordano, FerdinandoSearch for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeVParticle Physics - ExperimentDetectors and Experimental TechniquesA search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of 4.98 fb$^{-1}$ of pp collisions at a centre-of- mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, $|V_{lN}|^2$, for $l=e, μ$ as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorana-neutrino mixing for $m_N>90$ GeV.CERN-THESIS-2013-024CMS-TS-2013-047oai:cds.cern.ch:15374302013
spellingShingle Particle Physics - Experiment
Detectors and Experimental Techniques
Giordano, Ferdinando
Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV
title Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV
title_full Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV
title_fullStr Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV
title_full_unstemmed Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV
title_short Search for Heavy Majorana Neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets Events in pp Collisions at $\sqrt{s}=7$ TeV
title_sort search for heavy majorana neutrinos in $\mu^{\pm}\mu^{\pm}$+jets and $e^{\pm}e^{\pm}$+jets events in pp collisions at $\sqrt{s}=7$ tev
topic Particle Physics - Experiment
Detectors and Experimental Techniques
url http://cds.cern.ch/record/1537430
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