Physical Review Letters
Measurements of dijet azimuthal decorrelations in pp collisions at √s=7TeV using the CMS detector at the CERN LHC are presented. The analysis is based on an inclusive dijet event sample corresponding to an integrated luminosity of 2.9pb-1. The results are compared to predictions from perturbative QCD calculations and various Monte Carlo event generators. The dijet azimuthal distributions are found to be sensitive to initial-state gluon radiation. © 2011 CERN, for the CMS Collaboration.
Khachatryan, V., Sirunyan, A.M., et al.Dijet azimuthal decorrelations in pp collisions at √s=7TeV (2011) Physical Review Letters, 106 (12), art. no. 122003,