Karapınar, GülerDemir, Durmuş Ali2017-03-092017-03-092011Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2011). Measurement of dijet angular distributions and search for quark compositeness in pp collisions at √s=7TeV. Physical Review Letters, 106(20). doi:10.1103/PhysRevLett.106.2018040031-90071079-7114http://doi.org/10.1103/PhysRevLett.106.201804https://hdl.handle.net/11147/5024Dijet 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 36pb-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 Λ+=5.6TeV (Λ -=6.7TeV) for destructive (constructive) interference is obtained at the 95% confidence level. © 2011 American Physical Society.eninfo:eu-repo/semantics/openAccessTellurium compoundsAngular distributionElementary particlesProton proton collisionsQuarkArticle2-s2.0-7995919281410.1103/PhysRevLett.106.201804