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Search for contact interactions in μ[superscript +]μ[superscript -] events in pp collisions at √s=7  TeV

Author(s)
Apyan, Aram; Bauer, Gerry P.; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Kim, Y.; Klute, Markus; Krajczar, Krisztian F.; Li, W.; Luckey, P. David, Jr.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E.; Roland, Gunther M.; Rudolph, Matthew Scott; Stephans, George S. F.; Stockli, Fabian; Sumorok, Konstanty C.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward All; Wolf, R.; Wyslouch, Boleslaw; Yang, M.; Yilmaz, Yetkin; Yoon, Andrew; Zanetti, Marco; ... Show more Show less
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Abstract
Results are reported from a search for the effects of contact interactions using events with a high-mass, oppositely charged muon pair. The events are collected in proton-proton collisions at √s=7  TeV using the Compact Muon Solenoid detector at the Large Hadron Collider. The data sample corresponds to an integrated luminosity of 5.3  fb[superscript -1]. The observed dimuon mass spectrum is consistent with that expected from the standard model. The data are interpreted in the context of a quark- and muon-compositeness model with a left-handed isoscalar current and an energy scale parameter Λ. The 95% confidence level lower limit on Λ is 9.5 TeV under the assumption of destructive interference between the standard model and contact-interaction amplitudes. For constructive interference, the limit is 13.1 TeV. These limits are comparable to the most stringent ones reported to date.
Date issued
2013-02
URI
http://hdl.handle.net/1721.1/78610
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Search for contact interactions in μ[superscript +]μ[superscript -] events in pp collisions at √s=7  TeV.” Physical Review D 87.3 (2013).
Version: Final published version
ISSN
1550-7998
1089-4918

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