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arXiv 2103.02682hep-phhep-ex
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强子对撞机底夸克聚变产生$W^+W^-H$

$W^+W^-H$ production through bottom quarks fusion at hadron colliders

Pankaj Agrawal, Biswajit Das

摘要:

随着标准模型在描述对撞机数据方面的良好工作,现在的重点是确定标准模型参数以及任何偏差的暗示。特别是,确定希格斯玻色子与自身以及与模型中其他粒子的耦合对于更好地理解模型中的电弱对称破缺扇区是很重要的。在这封信中,我们看看过程$pp \to WWH$,特别是通过底夸克的融合。由于希格斯玻色子与底夸克的耦合不可忽略,在这个过程中存在对$WWHH$耦合的依赖。当$W$玻色子被纵向极化时,这个子过程的贡献最大。我们计算了极化$W$玻色子对不同末态的单圈QCD修正。我们发现,与纵向极化的$W$玻色子的末态的修正是大的。结果表明,测量$W$玻色子的偏振态可以作为探测该过程中$WWHH$耦合的一种工具。我们还研究了在$κ$ -框架中改变$WWHH$偶联的效果。

英文摘要:

With the standard model working well in describing the collider data, the focus is now on determining the standard model parameters as well as for any hint of deviation. In particular, the determination of the couplings of the Higgs boson with itself and with other particles of the model is important to better understand the electroweak symmetry breaking sector of the model. In this letter, we look at the process $pp \to WWH$, in particular through the fusion of bottom quarks. Due to the non-negligible coupling of the Higgs boson with the bottom quarks, there is a dependence on the $WWHH$ coupling in this process. This sub-process receives largest contribution when the $W$ bosons are longitudinally polarized. We compute one-loop QCD corrections to various final states with polarized $W$ bosons. We find that the corrections to the final state with the longitudinally polarized $W$ bosons are large. It is shown that the measurement of the polarization of the $W$ bosons can be used as a tool to probe the $WWHH$ coupling in this process. We also examine the effect of varying $WWHH$ coupling in the $κ$-framework.

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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