| Resumen |
We present measurements of the differential cross section dσ/dpTγ for the inclusive production of a photon in association with a b-quark jet for photons with rapidities |y γ|<1.0 and 30<pTγ<300GeV, as well as for photons with 1.5<|y γ|<2.5 and 30<pTγ<200GeV, where pTγ is the photon transverse momentum. The b-quark jets are required to have p T>15 GeV and rapidity |y jet|<1.5. The results are based on data corresponding to an integrated luminosity of 8.7 fb -1, recorded with the D0 detector at the Fermilab Tevatron pp- Collider at √s=1.96TeV. The measured cross sections are compared with next-to-leading order perturbative QCD calculations using different sets of parton distribution functions as well as to predictions based on the k T-factorization QCD approach, and those from the sherpa and pythia Monte Carlo event generators. |
