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Measurement of the t[overline t] production cross section in the all-jet final state in pp collisions at √s =7 TeV

Author(s)
CMS Collaboration; Apyan, Aram; Bauer, Gerry P; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Klute, Markus; Krajczar, Krisztian F.; Luckey Jr, P David; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E; Roland, Gunther M; Rudolph, Maja; Stephans, George S. F.; Stoeckli, Fabian; Sumorok, Konstanty C; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, Roger; Wyslouch, Boleslaw; Yang, Ming; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Kim, Y.; Chan, M.; ... Show more Show less
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Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
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Abstract
A measurement is presented of the t̄t production cross section σt̄t in proton-proton collisions at a centre-of-mass energy of 7 TeV, in the all-jet final state that contains at least six jets, two of which are tagged as originating from b quarks. The data correspond to an integrated luminosity of 3.54 fb ⁻¹, collected with the CMS detector at the LHC. The cross section is determined through an unbinned maximum likelihood fit of background and t̄t signal to the reconstructed mass spectrum of t̄t candidates in the data, in which events are subjected to a kinematic fit assuming a t̄t → W + bW - ̄b → 6 jets hypothesis. The measurement yields σ t̄t = 139±10(stat.)±26(syst.)±3(lum.)pb, a result consistent with those obtained in other t̄t decay channels, as well as with predictions of the standard model. © 2013 CERN for the benefit of the CMS collaboration.
Date issued
2013-05
URI
http://hdl.handle.net/1721.1/117214
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
Chatrchyan, S. et al. “Measurement of the t[overline t] production cross section in the all-jet final state in pp collisions at √s =7 TeV.” Journal of High Energy Physics 2013, 5 (May 2013): 65 © 2013 CERN for the benefit of the CMS collaboration
Version: Final published version
ISSN
1029-8479

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