Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
复制标题
通过大型强子对撞机中的喷射电荷区分希格斯粒子产生机制
DOI：
10.1103/physrevlett.131.041802
复制
发表时间：
2023
影响因子：
8.6
通讯作者：
Yuan, C.-P.
中科院分区：
文献类型：
--
作者：
Li, Hai Tao;Yan, Bin;Yuan, C.-P.
区分希格斯粒子的产生机制，对于确定希格斯粒子与规范玻色子的耦合，探索电弱对称性破缺的本质，可以起到至关重要的作用。我们提出了一种新的方法来区分在LHC的希格斯粒子产生机制，利用射流电荷的不对称性的两个领先的前喷流在希格斯粒子加上两个喷流生产。由于事件中两个主要喷流的电荷相关性，这一新的可观测性首次提供了一种将聚变从聚变和胶子聚变过程中分离出来的方法。我们证明了Higgs与规范玻色子的耦合可以被很好地约束，并且它的结论不依赖于其他可能的新的物理效应来改变Higgs的总宽度或部分宽度。我们还讨论了建议喷流电荷不对称性测量和Higgs信号强度测量之间的互补作用，在高亮度LHC（HL-LHC）在确定Higgs耦合。
Discriminating between Higgs production mechanisms can play a crucial role in determining the couplings of Higgs to gauge bosons, probing the nature of electroweak symmetry breaking. We propose a novel method to distinguish the Higgs production mechanisms at the LHC by utilizing the jet charge asymmetry of the two leading forward jets in Higgs plus two jets production. This novel observable provides a way to disentangle thefusion from thefusion and gluon fusion processes for the first time, due to the electric charge correlation of the two leading jets in the events. We show that the Higgs couplings to gauge bosons can be well constrained, and its conclusion does not depend on the other possible new physics effects which modify the Higgs total or partial width. We also discuss the complementary roles between the proposed jet charge asymmetry measurement and the Higgs signal strength measurements at the high luminosity LHC (HL-LHC) in determining the Higgs couplings.