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Title: Search for quark compositeness with the dijet centrality ratio in pp collisions at ?s=7TeV
Authors: Demir, Durmuş Ali
CMS Collaboration
Keywords: Elementary particles
CMS detectors
Energy scale
Proton proton collisions
Tellurium compounds
Issue Date: Dec-2010
Publisher: American Physical Society
Source: Khachatryan, 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.105.262001
Abstract: A 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.
ISSN: 0031-9007
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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