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Probing the strange Higgs coupling at lepton colliders using light-jet flavor tagging

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arxiv 1811.09636 v2 pith:O2GSAQSU submitted 2018-11-23 hep-ph hep-ex

classification hep-phhep-ex
keywords strangecouplingcollidersflavorhiggsleptonmethodtagging
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We propose a method to probe the coupling of the Higgs to strange quarks by tagging strange jets at future lepton colliders. For this purpose we describe a jet-flavor observable, $J_F$, that is correlated with the flavor of the quark associated with the hard part of the jet. Using this variable, we set up a strangeness tagger aimed at studying the decay $h\to s\bar{s}$. We determine the sensitivity of our method to the strange Yukawa coupling, and find it to be of the order of the standard-model expectation.

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  1. Higgs bosons with large couplings to light quarks

    hep-ph 2019-08 conditional novelty 7.0 of 10

    New SFV two-Higgs-doublet models allow electroweak-scale Higgs bosons with order-0.1 light-quark couplings, consistent with all current flavor and collider bounds.

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