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arXiv 2301.00873hep-ph
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NLO近似下ep相互作用中重夸克的产生截面

Production cross section of heavy quarks in ep interaction at the NLO approximation

S. Zarrin, S. Dadfar, M. Sayahi

摘要:

本文利用夸克和胶子在初始标度Q^{2}_{0}下的分布函数,给出了电子-质子相互作用中次领先级重夸克σ^{cc},σ^{bb}和{σ^{tt}}的产生截面.为此,我们利用重夸克系数函数的一种拟合形式,得到了重夸克的结构函数。然后利用结构函数计算了电子-质子碰撞中重夸克的约化截面,并给出了质心能量为319 GeV、1.3 TeV和3.5 TeV的重夸克的单微分和积分截面。将所得的魅夸克和美夸克的截面的数值结果与HERA数据进行了比较,HERA数据是H1和ZEUS探测器结果的组合,并与H1 PDF、MSTW 2008和MSRT 03的预测进行了比较.此外,我们提出了顶夸克的产生截面作为我们的计算的直接预测。

英文摘要:

We present the production cross section of heavy quarks σ^{cc}, σ^{bb} and {σ^{tt}} at the next-to-leading order in the electron-proton interaction by using the quarks and gluon distribution functions at the initial scale Q^{2}_{0}. To do this, we use a fitted form of the heavy quark coefficient functions for deep-inelastic lepton-hadron scattering to obtain the structure functions of heavy quarks. Then, we calculate the reduced cross section of heavy quarks by using the structure functions and subsequently present the single differential and the integrated cross section of heavy quarks at the center-of-mass energies of 319 GeV , 1.3 TeV and 3.5 TeV in the electron-proton collision. The obtained numerical results of the cross section of the charm and beauty quarks are compared with the HERA data, which is a combination from the results of the H1 and ZEUS detectors, and with the predictions from H1PDF, MSTW2008 and MSRT03. Furthermore, we present the production cross section of top quark as a direct prediction from our calculations.

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。

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