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Measurement of the t[bar over t] production cross section in the dilepton channel 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, Matthew Hans; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Kim, Yongsun; Klute, Markus; Krajczar, Krisztian F.; Li, W.; Luckey Jr, P David; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Stephans, George S. F.; Stoeckli, Fabian; Sumorok, Konstanty C; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, Roger; Wyslouch, Boleslaw; Xie, Si; Yang, Mingming; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; ... Show more Show less
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Abstract
The t[bar over t] over bar production cross section (σ[subscript t[bar pver t]) over bar)) is measured in proton-proton collisions at root √s = 7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb[superscript -1]. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of sigma(t (t) over bar) for a top-quark mass of 172.5 GeV is 161.9 +/- 2.5 (stat.)[subscript -5.0][superscript +5.1] (syst.) +/- 3.6 (lumi.) pb, consistent with the prediction of the standard model. Keywords: Hadron-Hadron Scattering
Date issued
2012-11
URI
http://hdl.handle.net/1721.1/117396
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
The CMS collaboration, et al. “Measurement of the t[bar over t] Production Cross Section in the Dilepton Channel in Pp Collisions at √s=7 TeV.” Journal of High Energy Physics, vol. 2012, no. 11, Nov. 2012. © 2012 CERN for the benefit of the CMS collaboration
Version: Final published version
ISSN
1029-8479

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