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Search for Heavy Neutrinos and WR Bosons with Right-Handed Couplings in a Left-Right Symmetric Model in pp Collisions at √s=7  TeV

Author(s)
Apyan, Aram; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Kim, Y.; Klute, Markus; Krajczar, Krisztian F.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Rudolph, Matthew Scott; Stephans, George S. F.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wyslouch, Boleslaw; Yilmaz, Yetkin; Zanetti, Marco; Luckey Jr, P David; Roland, Gunther M; Sumorok, Konstanty C; Wolf, Roger; Yang, Mingming; Yoon, A. S.; Wyslouch, Victoria; Bauer, Gerry P; Levin, Andrew Michael; Roland, Christof E; Stoeckli, Fabian; ... Show more Show less
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Abstract
Results are presented from a search for heavy, right-handed muon neutrinos, N[subscript μ], and right-handed WR bosons, which arise in the left-right symmetric extensions of the standard model. The analysis is based on a 5.0  fb[superscript -1] sample of proton-proton collisions at a center-of-mass energy of 7 TeV, collected by the CMS detector at the Large Hadron Collider. No evidence is observed for an excess of events over the standard model expectation. For models with exact left-right symmetry, heavy right-handed neutrinos are excluded at 95% confidence level for a range of neutrino masses below the W[subscript R] mass, dependent on the value of M[subscript W[subscript R]]. The excluded region in the two-dimensional (M[subscript W[subscript R]], M[subscript N[subscript μ]]) mass plane extends to M[subscript W[subscript R]]=2.5  TeV.
Date issued
2012-12
URI
http://hdl.handle.net/1721.1/77184
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Search for Heavy Neutrinos and W_{R} Bosons with Right-Handed Couplings in a Left-Right Symmetric Model in Pp Collisions at Sqrt[s]=7  TeV.” Physical Review Letters 109.26 (2012).
Version: Final published version
ISSN
0031-9007
1079-7114

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