High energy leptonic collisions and electroweak parton distribution functions
High energy leptonic collisions and electroweak parton distribution functions
复制标题
DOI：
10.1103/physrevd.103.l031301
复制
发表时间：
2020-07
影响因子：
5
通讯作者：
T. Han;Yang Ma;K. Xie
中科院分区：
文献类型：
--
作者：
T. Han;Yang Ma;K. Xie
在远高于电弱尺度的高能轻子碰撞中，电弱规范玻色子的共线分裂机制通过初始态辐射和终态阵雨成为主导现象。指出在未来的高能轻子对撞机中，如多tev μ子对撞机中，应采用电弱部分子分布函数（EW PDFs）作为初始态部分子碰撞的适当描述。轻子和电弱规范玻色子是电子粒子，它们根据未破缺标准模型（SM）规范群进化，并有效地恢复潜在的大共线对数。我们提出了一种基于次领先日志（NLL）精度的电子数据pdf格式。我们计算了未来多tev介子对撞机中一些重要SM过程的半包容截面。我们认为在未来的高能轻子对撞机中采用电子束PDF格式是合适的。
In high-energy leptonic collisions well above the electroweak scale, the collinear splitting mechanism of the electroweak gauge bosons becomes the dominant phenomena via the initial state radiation and the final state showering. We point out that at future high-energy lepton colliders, such as a multi-TeV muon collider, the electroweak parton distribution functions (EW PDFs) should be adopted as the proper description for partonic collisions of the initial states. The leptons and electroweak gauge bosons are the EW partons, that evolve according to the unbroken Standard Model (SM) gauge group and that effectively resum potentially large collinear logarithms. We present a formalism for the EW PDFs at the Next-to-Leading-Log (NLL) accuracy. We calculate semi-inclusive cross sections for some important SM processes at a future multi-TeV muon collider. We conclude that it is appropriate to adopt the EW PDF formalism for future high-energy lepton colliders.