• Open Access

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

V. Khachatryan et al. (CMS Collaboration)
Phys. Rev. Lett. 106, 201804 – Published 18 May 2011

Abstract

Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at s=7TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36pb1. 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 Λ+=5.6TeV (Λ=6.7TeV) for destructive (constructive) interference is obtained at the 95% confidence level.

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  • Received 10 February 2011

DOI:https://doi.org/10.1103/PhysRevLett.106.201804

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2011 CERN, for the CMS Collaboration

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Vol. 106, Iss. 20 — 20 May 2011

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