Searches for new physics using the t[bar over t] invariant mass distribution in pp collisions at √s = 8 TeV
Author(s)
Apyan, Aram; Busza, Wit; Cali, Ivan Amos; Chan, M.; Di Matteo, Leonardo; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Gulhan, Doga Can; Kim, Y.; Klute, Markus; Lai, Yue Shi; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Velicanu, Dragos Alexandru; Wyslouch, Boleslaw; Yilmaz, Yetkin; Zanetti, Marco; Levin, Andrew Michael; Roland, Christof E; Sumorok, Konstanty C; Wolf, Roger; Yang, Mingming; Yoon, A. S.; Wyslouch, Victoria; Bauer, Gerry P; Luckey Jr, P David; Roland, Gunther M; Stoeckli, Fabian; Dutta, Valentina; ... Show more Show less
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Searches for anomalous top quark-antiquark production are presented, based on pp collisions at s√ = 8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb[superscript −1], were collected with the CMS detector at the LHC. The observed t[bar over t] invariant mass spectrum is found to be compatible with the standard model prediction. Limits on the production cross section times branching fraction probe, for the first time, a region of parameter space for certain models of new physics not yet constrained by precision measurements.
Date issued
2013-11Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Searches for new physics using the t[bar over t] invariant mass distribution in pp collisions at √s = 8 TeV.” Physical Review Letters 111.21 (2013): n. pag. © 2013 CERN, for the CMS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114