Title
Search for quark compositeness with the dijet centrality ratio in pp collisions at √s=7TeV
Date Issued
20 December 2010
Access level
open access
Resource Type
journal article
Author(s)
Khachatryan V.
Sirunyan A.M.
Tumasyan A.
Adam W.
Bergauer T.
Dragicevic M.
Erö J.
Fabjan C.
Friedl M.
Frühwirth R.
Ghete V.M.
Hammer J.
Hänsel S.
Hartl C.
Hoch M.
Hörmann N.
Hrubec J.
Jeitler M.
Kasieczka G.
Kiesenhofer W.
Krammer M.
Liko D.
Mikulec I.
Pernicka M.
Rohringer H.
Schöfbeck R.
Strauss J.
Taurok A.
Teischinger F.
Waltenberger W.
Walzel G.
Widl E.
Wulz C.E.
Mossolov V.
Shumeiko N.
Suarez Gonzalez J.
Benucci L.
Ceard L.
De Wolf E.A.
Janssen X.
Maes T.
Mucibello L.
Ochesanu S.
Roland B.
Rougny R.
Selvaggi M.
Van Haevermaet H.
Van Mechelen P.
Van Remortel N.
Adler V.
Beauceron S.
Blyweert S.
D'Hondt J.
Devroede O.
Kalogeropoulos A.
Maes J.
Maes M.
Tavernier S.
Van Doninck W.
Van Mulders P.
Van Onsem G.P.
Villella I.
Charaf O.
Clerbaux B.
De Lentdecker G.
Dero V.
Gay A.P.R.
Hammad G.H.
Hreus T.
Marage P.E.
Thomas L.
Vander Velde C.
Vanlaer P.
Wickens J.
Costantini S.
Grunewald M.
Klein B.
Marinov A.
Ryckbosch D.
Thyssen F.
Tytgat M.
Vanelderen L.
Verwilligen P.
Walsh S.
Zaganidis N.
Basegmez S.
Bruno G.
Caudron J.
De Favereau De Jeneret J.
Delaere C.
Demin P.
Favart D.
Giammanco A.
Grégoire G.
Hollar J.
Lemaitre V.
Militaru O.
Ovyn S.
Pagano D.
Pin A.
Publisher(s)
American Physical Society
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. © 2010 CERN, for the CMS Collaboration.
Volume
105
Issue
26
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-78650553319
Source
Physical Review Letters
ISSN of the container
0031-9007
Sponsor(s)
ST/H00081X/2
National Science Foundation 0802184 NSF
Science and Technology Facilities Council CMS, GRIDPP, PP/D004284/1, PP/E002722/1, ST/F006748/1, ST/F007094/1, ST/G502347/1, ST/G502412/1, ST/I000410/1, ST/I002200/1, ST/I002839/1, ST/I505572/1, ST/K001604/1 STFC
Science and Technology Facilities Council STFC
Sources of information:
Directorio de Producción Científica
Scopus