arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1203.5865hep-ex
收藏

$\sqrt{s}=1.96~\TeV$上PDMATHAAB碰撞中光子$+b$ -喷流产生微分截面的测量

Measurement of the photon$+b$-jet production differential cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96~\TeV$

D0 Collaboration

摘要:

我们测量了与b夸克喷流相关联的光子的微分截面dsigma/dpT_gamma,其中光子的快度为|y_gamma| < 1.0和30<pT_gamma <300 GeV,以及光子的快度为1.5< |y_gamma| < 2.5和30< pT_gamma <200 GeV,其中pT_gamma是光子的横动量。b夸克喷注需要pT>15 GeV,快度|y_jet| < 1.5。这些结果基于费米实验室Tevatron $p\bar{p}$对撞机上的D 0探测器在sqrt(s)=1.96 TeV时记录的积分亮度为8.7 fb^-1的数据。测量的横截面进行比较,下一个领先的顺序微扰QCD计算使用不同的部分子分布函数,以及预测的基础上的KT-因子分解QCD方法,和那些从夏尔巴和Pythia蒙特卡罗事件发生器。

英文摘要:

We present measurements of the differential cross section dsigma/dpT_gamma for the inclusive production of a photon in association with a b-quark jet for photons with rapidities |y_gamma|< 1.0 and 30<pT_gamma <300 GeV, as well as for photons with 1.5<|y_gamma|< 2.5 and 30< pT_gamma <200 GeV, where pT_gamma is the photon transverse momentum. The b-quark jets are required to have pT>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 $p\bar{p}$ Collider at sqrt(s)=1.96 TeV. 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 kT-factorization QCD approach, and those from the Sherpa and Pythia Monte Carlo event generators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑