Dijet azimuthal decorrelations in pp collisions at √s=7 TeV

Phys Rev Lett. 2011 Mar 25;106(12):122003. doi: 10.1103/PhysRevLett.106.122003. Epub 2011 Mar 22.

Abstract

Measurements of dijet azimuthal decorrelations in pp collisions at √s=7 TeV 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 2.9 pb⁻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.