Demir, Durmuş AliKarapınar, Güler2016-11-232016-11-232010Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., ...CMS Collaboration (2010). Search for quark compositeness with the dijet centrality ratio in pp collisions at √s=7TeV. Physical Review Letters, 105(26). doi:10.1103/PhysRevLett.105.2620010031-90071079-7114https://doi.org/10.1103/PhysRevLett.105.262001https://hdl.handle.net/11147/2504A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at √s=7TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9pb⊃-1 collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the standard model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.eninfo:eu-repo/semantics/openAccessElementary particlesCMS detectorsEnergy scaleProton proton collisionsTellurium compoundsArticle2-s2.0-7865055331910.1103/PhysRevLett.105.26200110.1103/PhysRevLett.105.262001