Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at [sqrt]s=7 TeV
Author(s)
Alver, Burak Han; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Dutta, Valentina; Everaerts, Pieter Bruno Bart; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Kim, Y.; Klute, Markus; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Wenger, Edward Allen; Xie, Si; Wang, M.; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Harris, Philip Coleman; Li, W.; Luckey Jr, P David; Roland, Gunther M; Lee, Yen-Jie; Loizides, Constantinos; Roland, Christof E; Rudolph, Matthew Scott; Sumorok, Konstanty C; Bauer, Gerry P; ... Show more Show less
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Alternative title
Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at √s=7 TeV
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Show full item recordAbstract
Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at [sqrt]s=7 TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36 pb[superscript -1]. The data are found to be in good agreement with the predictions of perturbative QCD, and yield no evidence of quark compositeness. With a modified frequentist approach, a lower limit on the contact interaction scale for left-handed quarks of Lambda+=5.6 TeV (Lambda-=6.7 TeV) for destructive (constructive) interference is obtained at the 95% confidence level.
Date issued
2011-05Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
V. Khachatryan et al. (CMS Collaboration). "Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at [sqrt]s=7 TeV." Phys. Rev. Lett. 106, 201804 (2011) [14 pages].
Version: Final published version
ISSN
0031-9007