Light-quarks Yukawa couplings and new physics in exclusive high-$p_T$ Higgs + jet and Higgs + $b$-jet events

Abstract

We suggest that the exclusive Higgs + light (or b)-jet production at the LHC, $pp\to h+j(j_b)$, is a rather sensitive probe of the light-quarks Yukawa couplings and of other forms of new physics (NP) in the Higgs-gluon $hgg$ and quark-gluon $qqg$ interactions. We study the Higgs $p_T$-distribution in $pp\to h+j(j_b)\to \gamma \gamma +j(j_b)$, i.e., in $h+j(j_b)$ production followed by the Higgs decay $h\to \gamma \gamma$, employing the ($p_T$-dependent) signal strength formalism to probe various types of NP which are relevant to these processes and which we parameterize either as scaled Standard Model (SM) couplings (the kappa-framework) and/or through new higher dimensional effective operators (the SMEFT framework). We find that the exclusive $h+j(j_b)$ production at the 13 TeV LHC is sensitive to various NP scenarios, with typical scales ranging from a few TeV to $\mathcal{O}(10)$ TeV, depending on the flavor, chirality and Lorentz structure of the underlying physics.

19 pages, 17 figures, 3 tables. Version as published in PRD

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Cited by in corpus (12)

• NLO Higgs+jet at large transverse momenta including top quark mass effects
• Flavour Conservation in Two Higgs Doublet Models
• A universally enhanced light-quarks Yukawa couplings paradigm
• Light quark Yukawas in triboson final states
• Cancellation in Dark Matter-Nucleon Interactions: the Role of Non-Standard-Model-like Yukawa Couplings
• More light on Higgs flavor at the LHC: Higgs couplings to light quarks through $h+\gamma$ production
• Large Higgs-electron Yukawa coupling in 2HDM
• Bottom-induced contributions to Higgs plus jet at next-to-next-to-leading order
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