Constraining the Higgs Boson Coupling to Light Quarks in the $H\to ZZ$ Final States

Abstract

We constrain the Higgs boson (Yukawa) coupling to quarks in the first two generations in the $H\to ZZ$ final states. Deviation of these couplings from the Standard Model values leads to change in the Higgs boson width and in the cross sections of relevant processes. In the Higgs boson resonance region, an increased light Yukawa coupling leads to an increased Higgs boson width, which in turn leads to a decreased cross section. In the off-shell region, increased Yukawa couplings result in an enhancement of the Higgs boson signal through $q\bar{q}$ annihilation. With the assumption of scaling one Yukawa coupling at a time, this study is conceptually simple and yields results with the same order of magnitude as the tightest in the literature. The study is based on results published by the CMS experiment at the LHC in 2014, corresponding to integrated luminosities of $5.1\ifb$ at a centre-of-mass energy $\sqrt{s}=7\tev$ and $19.7\ifb$ at $8\tev$.

7 pages, 5 figures, 3 tables

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Cited by in corpus (14)

• Light quark Yukawa couplings from Higgs kinematics
• Generalized King linearity and new physics searches with isotope shifts
• Higgs bosons with large couplings to light quarks
• Flavour Conservation in Two Higgs Doublet Models
• Higgs Boson Decay to Light Jets at the LHC
• Thrust distribution in Higgs decays at the next-to-leading order and beyond
• Radiative Decays of the Higgs Boson to a Pair of Fermions
• Observation of WW$\gamma$ production and search for H$\gamma$ production in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Multi-Higgs Production Probes Higgs Flavor
• How large can the Light Quark Yukawa couplings be?
• Angularity in Higgs boson decays via $\mathbf{H}\to \mathbf{gg}$ at NNLL${}^{\prime }$ accuracy
• Constraining the Higgs couplings to up and down quarks using production kinematics at the CERN Large Hadron Collider
• Search for $\gamma$H production and constraints on the Yukawa couplings of light quarks to the Higgs boson
• Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders