# Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at 7 TeV

7 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : 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 inverse picobarns. 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 is obtained at the 95% confidence level.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00565132
Contributor : Sylvie Flores <>
Submitted on : Friday, February 11, 2011 - 11:21:45 AM
Last modification on : Wednesday, January 6, 2021 - 6:44:02 PM

### Citation

V. Khachatryan, D. Sillou, M. Besancon, S. Choudhury, M. Dejardin, et al.. Measurement of Dijet Angular Distributions and Search for Quark Compositeness in pp Collisions at 7 TeV. Physical Review Letters, American Physical Society, 2011, 106, pp.201804. ⟨10.1103/PhysRevLett.106.201804⟩. ⟨in2p3-00565132⟩

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