arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.6298hep-ph
收藏

对LHC双喷流产生的弱辐射修正

Weak radiative corrections to dijet production at the LHC

Stefan Dittmaier, Alexander Huss, Christian Speckner

摘要:

本文总结了强子对撞机双喷流产生的弱修正计算,包括O(α_s^2 α,α^2)的树级效应和O(α_s^2α)的圈修正。虽然受小的耦合常数α的抑制,但由于Sudakov型等高能粒子的出现,弱辐射修正在高能区可以变大。一般来说,对横动量分布的修正比不变质量分布的修正大约两倍,因为不变质量分布不像k_T分布那样在高尺度下受Sudakov区的支配。的电弱树级的贡献被发现是相同的通用大小的环路校正。

英文摘要:

We summarize the calculation of the weak corrections to dijet production at hadron colliders, comprising tree-level effects of O(α_sα,α^2) and loop corrections of O(α_s^2α). Although suppressed by the small value of the coupling constant α, the weak radiative corrections can become large in the high-energy domain due to the appearance of Sudakov-type and other high-energy logarithms. Generally the corrections to the transverse-momentum distributions are larger by approximately a factor of two compared to the corresponding reach in the invariant-mass distributions, because the invariant-mass distributions are not, unlike the k_T distributions, dominated by the Sudakov regime at high scales. The electroweak tree-level contributions are found to be of the same generic size as the loop corrections.

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。

↑