arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1910.04546hep-phhep-ex
收藏

探测Higgs对产生中的轻Yukawa耦合

Probing light Yukawa couplings in Higgs pair production

Lina Alasfar, Ramona Gröber

摘要:

SM的难题之一是不同味道的汤川耦合之间的大层次结构。到目前为止,第一代和第二代汤川耦合的约束非常弱。然而,人们可以在几个新物理学(NP)模型中获得汤川耦合的大偏差,例如具有新的矢量类夸克的模型,或者自然耦合到单个费米子家族的新希格斯玻色子玻色子。在这项工作中,我们调查的NP Higgs汤川耦合修改$ κ_f$的轻夸克在LHC的双希格斯,从一个模型独立的形式主义。我们已经研究了两个希格斯玻色子的最终态$ b \bar b γγ$,和相关的实验削减,以减少背景和估计潜在的排斥界限$ κ_f$。我们考虑了线性和非线性有效场论的Higgs轻夸克耦合修正。

英文摘要:

One of the puzzles of the SM is the large hierarchy between the Yukawa couplings of different flavours. Yukawa couplings of the first and the second generation are constrained only very weakly so far. However, one can obtain large deviations in the Yukawa couplings in several New Physics (NP) models, such as e.g. models with new vector-like quarks, or new Higgs bosons that couple naturally to individual fermion families. In this work, we investigate the potential bounds on the NP Higgs Yukawa couplings modification $ κ_f$ for light quarks from double-Higgs at the LHC, starting from a model independent formalism. We have looked at the two Higgs boson final state $ b \bar b γγ$, and the relevant experimental cuts to reduce backgrounds and estimated the potential exclusion bounds for $ κ_f$. We have considered both linear and non-linear effective field theory for the Higgs light quark coupling modifications.

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。

↑