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| HAL : in2p3-00743447, version 1 |
| arXiv : 1210.5033 |
| DOI : 10.1016/j.physletb.2013.01.033 |
| Fiche détaillée |  Récupérer au format |
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| Physics Letters B 719 (2013) 354-361 |
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| Measurement of differential photon+ c-jet cross sections and the ratio of photon+ c and photon+ b cross sections in proton-antiproton collisions at sqrt(s) = 1.96 TeV |
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| D0 Collaboration(s) |
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| (2013) |
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| 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 $|y^{\gamma}|< 1.0$ and transverse momentum $30 < p_{T}^{\gamma} < 300$ GeV. The $c$-quark jets are required to have $|y^{jet}| < 1.5$ and $p_{T}^{jet} >15$ GeV. The cross section ratios $\sigma(\gamma+c)/\sigma(\gamma+b)$ as a function of $p_{T}^{\gamma}$ are 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 $p\bar{p}$ Collider at $\sqrt{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. |
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| Thème(s) | : | Physique/Physique des Hautes Energies - Expérience |
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| Lien vers le texte intégral : |
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| http://fr.arXiv.org/abs/1210.5033 |
| in2p3-00743447, version 1 | |
| http://hal.in2p3.fr/in2p3-00743447 | |
| oai:hal.in2p3.fr:in2p3-00743447 | |
| Contributeur : Sylvie Florès | |
| Soumis le : Vendredi 19 Octobre 2012, 07:49:11 | |
| Dernière modification le : Lundi 11 Février 2013, 15:42:36 | |
