arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1905.09360hep-ph
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魅力汤川

Bounding the Charm Yukawa

Nina M. Coyle, Carlos E. M. Wagner, Viska Wei

摘要:

对观测到的希格斯玻色子性质的研究是高能物理的主要研究内容之一。虽然希格斯玻色子与弱规范玻色子、第三代夸克和轻子的耦合已经被详细研究,但希格斯玻色子与第一代和第二代费米子的耦合却知之甚少。在这篇文章中,我们在所谓的$κ$框架下研究了粲夸克Higgs耦合。我们强调希格斯耦合之间的特定相关性的存在,可以使测量的LHC希格斯生产率接近SM值的魅力耦合从其SM值,$κ_c = 1$的大偏差的存在。在此基础上,我们更新的间接界限$κ_c$通过适合在大型强子对撞机的精确希格斯测量。我们还研究了辐射衰变$H \to J/ψ+ γ$、粲夸克关联的Higgs产生、Higgs场的粲夸克衰变和$W^{\pm} + H$产生中的电荷不对称对$κ_c$的限制。估计未来的LHC灵敏度$κ_c$在高亮度运行。

英文摘要:

The study of the properties of the observed Higgs boson is one of the main research activities in High Energy Physics. Although the couplings of the Higgs to the weak gauge bosons and third generation quark and leptons have been studied in detail, little is known about the Higgs couplings to first and second generation fermions. In this article, we study the charm quark Higgs coupling in the so-called $κ$ framework. We emphasize the existence of specific correlations between the Higgs couplings that can render the measured LHC Higgs production rates close to the SM values in the presence of large deviations of the charm coupling from its SM value, $κ_c = 1$. Based on this knowledge, we update the indirect bounds on $κ_c$ through a fit to the precision Higgs measurements at the LHC. We also examine the limits on $κ_c$ arising from the radiative decay $H \to J/ψ+ γ$, the charm quark-associated Higgs production, charm quark decays of the Higgs field and charge asymmetry in $W^{\pm} + H$ production. Estimates for the future LHC sensitivity on $κ_c$ at the high luminosity run are provided.

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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