Title
Search for heavy Majorana neutrinos in <tex>$\mu^{\pm}\mu^{\pm}$</tex> + jets and <tex>$e^{\pm}e^{\pm}$</tex> + jets events in pp collisions at <tex>$\sqrt{s}$</tex> = 7 TeVSearch for heavy Majorana neutrinos in <tex>$\mu^{\pm}\mu^{\pm}$</tex> + jets and <tex>$e^{\pm}e^{\pm}$</tex> + jets events in pp collisions at <tex>$\sqrt{s}$</tex> = 7 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Department of Physics
Publication type
article
Publication
Amsterdam,
Subject
Physics
Source (journal)
Physics letters: B. - Amsterdam, 1967, currens
Volume/pages
717(2012):1-3, p. 109-128
ISSN
0370-2693
ISI
000310187700010
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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, vertical bar V-lN vertical bar(2), for l = e. mu, as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorananeutrino mixing for m(N) > 90 GeV. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/091d8c/3588.pdf
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