arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.02084hep-phhep-ex
收藏

通过希格斯玻色子衰变中的喷注电荷关联探测$Hgg$耦合

Probing the $Hgg$ coupling through the jet charge correlation in Higgs boson decay

Xiao-Rui Wang, Bin Yan

AI总结:

本研究提出利用希格斯衰变产生的两个领头喷注的电荷不对称性,在未来轻子对撞机上提取希格斯-胶子规范耦合信息的新方法,可有效约束该耦合且对喷注电荷参数不敏感。

摘要:

希格斯玻色子与胶子的有效耦合决定了大型强子对撞机(LHC)上希格斯玻色子的产生速率,对测量希格斯性质具有关键作用。本文提出一种在未来轻子对撞机上提取希格斯-胶子规范耦合信息的新方法,利用希格斯玻色子衰变产生的两个领头喷注的喷注电荷不对称性。由于希格斯衰变产物的喷注电荷关联特性,我们证明信号过程$H\to gg$的不对称性值接近1,而主导背景的该值始终大于1。借助喷注电荷信息,未来希格斯工厂有望很好地约束希格斯-胶子有效耦合,且该结论对喷注电荷参数$\kappa$不敏感。

英文摘要:

The effective coupling of the Higgs boson to gluons determines the production rate of the Higgs boson at the LHC and plays a crucial role to measure the Higgs properties. In this paper, we propose a novel method to extract the Higgs gluon gauge coupling information at the future lepton colliders, by utilizing the jet charge asymmetry of the two leading jets from the Higgs boson decay. Owing to the jet charge correlation nature of the Higgs decay products, we demonstrate that this asymmetry value would be close to one for the signal $H\to gg$, while it is always larger than one for the dominated backgrounds. With the help of the jet charge information, it is possible to constrain the Higgs gluon effective coupling very well in the future Higgs factory and this conclusion is not sensitive to the jet charge parameter $κ$.

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。

↑