论文标题
$ {\ bf \ text {w}^+\ text {w}^ - } $在LHC上生产的偏振电动玻色子，包括NLO QCD效果
Polarized electroweak bosons in ${\bf \text{W}^+\text{W}^-}$ production at the LHC including NLO QCD effects
论文作者
论文摘要
LHC处的巨大规模玻色子的极化部分的测量提供了对标准模型的重要检查，尤其是电子对称性破坏机制。由于$ \ text {w} $和$ \ text {z} $ bosons的不稳定字符，为极化信号设计一个理论定义并不简单，并且始终受到某种歧义的影响。专注于$ \ text {w} $ - 在完全松弛的通道中的LHC上的玻色子对生产，我们建议根据幅度的量规不变部分计算极化的横截面和分布。我们将NLO QCD校正包括为领先的Quark引起的partononic过程，还考虑了循环诱导的GLUON引发的过程，从而导致相同的最终状态。我们介绍了包容性设置和现实的基金区域的结果，特别关注适用于偏光横截面和可以通过实验测量的数量的变量。
The measurement of polarization fractions of massive gauge bosons at the LHC provides an important check of the Standard Model and in particular of the Electroweak Symmetry Breaking mechanism. Owing to the unstable character of $\text{W}$ and $\text{Z}$ bosons, devising a theoretical definition for polarized signals is not straightforward and always subject to some ambiguity. Focusing on $\text{W}$-boson pair production at the LHC in the fully leptonic channel, we propose to compute polarized cross-sections and distributions based on the gauge-invariant doubly-resonant part of the amplitude. We include NLO QCD corrections to the leading quark-induced partonic process and also consider the loop-induced gluon-initiated process contributing to the same final state. We present results for both an inclusive setup and a realistic fiducial region, with special focus on variables that are suited for the discrimination of polarized cross-sections and on quantities that can be measured experimentally.
