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arXiv · 1606.09621

Light quark Yukawa couplings from Higgs kinematics

Yotam Soreq·Hua Xing Zhu·Jure Zupan
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Abstract

We show that the normalized Higgs production $p_T$ and $y_h$ distributions are sensitive probes of Higgs couplings to light quarks. For up and/or down quark Yukawa couplings comparable to the SM $b$ quark Yukawa the $\bar u u$ or $\bar d d$ fusion production of the Higgs could lead to appreciable softer $p_T$ distribution than in the SM. The rapidity distribution, on the other hand, becomes more forward. We find that, owing partially to a downward fluctuation, one can derive competitive bounds on the two couplings using ATLAS measurements of normalized $p_T$ distribution at 8\,TeV. With 300 fb${}^{-1}$ at 13\,TeV LHC one could establish flavor non-universality of the Yukawa couplings in the down sector.

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Yotam Soreq, Hua Xing Zhu, Jure Zupan. 2016-12-21. Light quark Yukawa couplings from Higgs kinematics. https://doi.org/10.1007/jhep12(2016)045

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