Electroweak radiative corrections to $W^+W^-gamma$ production at the ILC
Electroweak radiative corrections to $W^+W^-gamma$ production at the ILC
复制标题
ILC 对 $W^ W^-gamma$ 生产的电弱辐射校正
DOI：
10.1140/epjc/s10052-014-3166-y
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发表时间：
2014
影响因子：
4.4
通讯作者：
Lei Guo
中科院分区：
文献类型：
--
作者：
Chong Chen;Wen-Gan Ma;Ren-You Zhang;Yu Zhang;Liang-Wen Chen;Lei Guo
我们提供并讨论了包括全电弱（EW）单环修正和标准模型中的高阶初始态辐射（ISR）贡献在内的ILC生产精度预测。研究了前导阶（LO）和EW修正截面与碰撞能量的关系。我们发现，电子束修正显著抑制了LO截面，在阈值附近，ISR效应非常重要，但在高能区可以忽略不计。我们给出了最终玻色子和光子的横向动量和速度以及对不变质量的LO和EW校正分布。从各种运动分布中，我们发现电子束修正强烈地依赖于末态相空间。采用窄宽度近似研究了最终w -玻色子对的轻子衰变，发现最终产生的光子和轻子可以很好地相互分离。
We provide and discuss the precision predictions for theproduction at the ILC including the full electroweak (EW) one-loop corrections and high order initial state radiation (ISR) contributions in the standard model. The dependence of the leading order (LO) and EW corrected cross sections on the colliding energy is investigated. We find that the EW correction suppresses the LO cross section significantly, and the ISR effect beyondis important near the threshold, but it is negligible in the high energy region. We provide the LO and EW corrected distributions of the transverse momenta and rapidities of final-boson and photon as well as the-pair invariant mass. From the various kinematic distributions, we find that the EW correction strongly depends on the final state phase space. We investigate the leptonic decays of the final W-boson pair by adopting the narrow width approximation, and we find that the final produced photon and leptons can be well separated from each other.