A search for quark compositeness using dijet angular distributions from pp collisions at ps = 7TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2:2 fb1, recorded by the CMS experiment at the LHC. Normalized dijet angular distributions have been measured for dijet invariant masses from 0.4TeV to above 3TeV and compared with a variety of contact interaction models, including those which take into account the eects of next-to-leading-order QCD corrections. The data are found to be in agreement with the predictions of perturbative QCD, and lower limits are obtained on the contact interaction scale, ranging from 7.5 up to 14.5TeV at 95% condence level.

Search for quark compositeness in dijet angular distributions from pp collisions at sqrt(s) = 7 TeV

CAVALLO, Nicola;FABOZZI, FRANCESCO;
2012-01-01

Abstract

A search for quark compositeness using dijet angular distributions from pp collisions at ps = 7TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2:2 fb1, recorded by the CMS experiment at the LHC. Normalized dijet angular distributions have been measured for dijet invariant masses from 0.4TeV to above 3TeV and compared with a variety of contact interaction models, including those which take into account the eects of next-to-leading-order QCD corrections. The data are found to be in agreement with the predictions of perturbative QCD, and lower limits are obtained on the contact interaction scale, ranging from 7.5 up to 14.5TeV at 95% condence level.
2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/27362
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