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>Measurement of the differential γ+c-jet cross section and the ratio of differential γ+c and γ+b cross sections in ppˉ collisions at s=1.96 TeV
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Measurement of the differential γ+c-jet cross section and the ratio of differential γ+c and γ+b cross sections in ppˉ collisions at s=1.96 TeV
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机译：差分γ + c -射流截面和差值γ + c 和γ + b 截面si4.gif“ display =” inline“ overflow =” scroll“> p p < mml：mo>ˉ 在 s = 1.96 TeV
We present measurements of the differential cross section d σ / d p T γ for the associated production of a c -quark jet and an isolated photon with rapidity | y γ | 1.0 and transverse momentum 30 p T γ 300 GeV . The c -quark jets are required to have | y jet | 1.5 and p T jet 15 GeV . The ratio of differential cross sections for γ + c to γ + b production as a function of p T γ 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 ˉ 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 k T -factorization approach, and to predictions from the sherpa and pythia Monte Carlo event generators.
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机译：我们提出了微分截面dσ/ d p Tγ的测量结果，这些结果与c夸克射流和孤立光子的产生有关。 γ| <1.0和横向动量30 Tγ<300 GeV。 C型夸克射流必须具有| y喷气机| <1.5和p T jet> 15 GeV。还给出了γ+ c与γ+ b产生的微分截面之比与p Tγ的关系。结果基于与8.7 fb？的综合光度对应的数据。在Fermilab Tevatron p pˉCollider上用D0探测器记录的1 s = 1.96 TeV。将获得的结果与使用各种parton分布函数的次先扰动QCD计算，基于k T分解方法的预测以及来自sherpa和pythia蒙特卡洛事件生成器的预测进行比较。
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