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arXiv 0704.1677hep-ph
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强子对撞机喷流产生的恢复截面

Resummed Cross Section for Jet Production at Hadron Colliders

Daniel de Florian, Werner Vogelsang

摘要:

本文研究了强子对撞机上单包喷流截面的大对数微扰修正。我们讨论的修正出现在部分子反应的阈值附近,当进入的部分子有足够的能量产生高横动量的终态时。所得到的对数校正的结构是已知的,关键取决于在阈值处所产生的射流的不变质量的治疗。我们允许喷流在阈值处具有非零质量,这与实验中的情况最为接近。匹配我们的结果,可用的半解析下到领先的顺序计算,我们得到有效的下到领先的对数精度的结果。我们提出了在Tevatron和RHIC能量的再膨胀效应的数值结果。

英文摘要:

We study the resummation of large logarithmic perturbative corrections to the single-inclusive jet cross section at hadron colliders. The corrections we address arise near the threshold for the partonic reaction, when the incoming partons have just enough energy to produce the high-transverse-momentum final state. The structure of the resulting logarithmic corrections is known to depend crucially on the treatment of the invariant mass of the produced jet at threshold. We allow the jet to have a non-vanishing mass at threshold, which most closely corresponds to the situation in experiment. Matching our results to available semi-analytical next-to-leading-order calculations, we derive resummed results valid to next-to-leading logarithmic accuracy. We present numerical results for the resummation effects at Tevatron and RHIC energies.

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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