Title Search for quark compositeness with the dijet centrality ratio in pp collisions at $\sqrt{s}$ = 7 TeVSearch for quark compositeness with the dijet centrality ratio in pp collisions at $\sqrt{s}$ = 7 TeV Author Khachatryan, V. Sirunyan, A. M. Tumasyan, A. de Wolf, E.A. Janssen, X. Mucibello, L. Roland, B. Rougny, R. Selvaggi, M. van Haevermaet, H. Van Mechelen, P. Van Remortel, N. et al. Faculty/Department Faculty of Sciences. Physics Research group Elementary Particle Physics Publication type article Publication 2010New York, N.Y., 2010 Subject Physics Source (journal) Physical review letters. - New York, N.Y. Volume/pages 105(2010):26, p. 1-15 ISSN 0031-9007 ISI 000286754700004 Carrier E-only publicatie Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp 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=7  TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9  pb-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. Full text (open access) https://repository.uantwerpen.be/docman/irua/6fe272/f2119bc3.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286754700004&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286754700004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286754700004&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle