Measurement of the differential γ + c-jet cross section and the ratio of differential γ + c and γ + b cross sections in proton-antiproton collisions at √s = 1.96 TeV

0397675 - FZÚ 2014 RIV NL eng J - Článek v odborném periodiku
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … celkem 386 autorů
Measurement of the differential γ + c-jet cross section and the ratio of differential γ + c and γ + b cross sections in proton-antiproton collisions at √s = 1.96 TeV.
Physics Letters. B. Roč. 719, 4-5 (2013), s. 354-361. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA MŠMT(CZ) LG12006
Institucionální podpora: RVO:68378271
Klíčová slova: D0 * harm * associated production * bottom * associated production * parton * distribution function * quantum chromodynamics * perturbation theory * anti-p p
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 6.019, rok: 2013
http://www.sciencedirect.com/science/article/pii/S0370269313000580

We present measurements of the differential cross section dσ/dpγT for the associated production of a c-quark jet and an isolated photon with rapidity |yγ|<1.0 and transverse momentum 3015 GeV. The ratio of differential cross sections for photon+ c and photon+ b production as a function of pγT is also presented. 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 ppˉ Collider at s√=1.96 TeV. The obtained results are compared to next-to-leading order perturbative QCD calculations using various parton distribution functions, to predictions based on the kT-factorization approach, and to predictions from the Sherpa and Pythia Monte Carlo event generators.
Trvalý link: http://hdl.handle.net/11104/0225309