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Measurement of the differential gamma plus c-jet cross section and the ratio of differential gamma plus c and gamma plus b cross sections in p(p)over-bar collisions at root s=1.96 TeV
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2013 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 719, no 4-5, 354-361 p.Article in journal (Refereed) Published
Abstract [en]

We present measurements of the differential cross section d sigma/dp(T)(gamma) for the associated production of a c-quark jet and an isolated photon with rapidity vertical bar y(gamma)vertical bar < 1.0 and transverse momentum 30 < p(T)(gamma) < 300 GeV. The c-quark jets are required to have vertical bar y(jet)vertical bar < 1.5 and p(T)(jet) > 15 GeV. The ratio of differential cross sections for gamma + c to gamma + b production as a function of p(T)(gamma) 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 p (p) over bar Collider at root 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 k(T)-factorization approach, and to predictions from the SHERPA and PYTHIA Monte Carlo event generators. 

Place, publisher, year, edition, pages
2013. Vol. 719, no 4-5, 354-361 p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-198411DOI: 10.1016/j.physletb.2013.01.033ISI: 000315316900014OAI: oai:DiVA.org:uu-198411DiVA: diva2:616071
Available from: 2013-04-15 Created: 2013-04-15 Last updated: 2013-04-15Bibliographically approved

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Buszello, Claus P
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High Energy Physics
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