Charming the Higgs

Abstract

We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs to bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs to charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor-tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs to charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.

8 pages, 3 figures

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Cited by in corpus (46)

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• Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment
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• Rare exclusive decays of the Z-boson revisited
• Search for Higgs boson decay to a charm quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Phenomenology of Enhanced Light Quark Yukawa Couplings and the $W^{\pm }h$ Charge Asymmetry
• Search for rare decays of Z and Higgs bosons to J$/\psi$ and a photon in proton-proton collisions at $\sqrt{s}=$ 13 TeV
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• Probing New Physics in Higgs Couplings to Fermions using an Angular Analysis
• Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s}=$ 8 TeV
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• Constraining the Higgs couplings to up and down quarks using production kinematics at the CERN Large Hadron Collider
• Constraining the Charm-Yukawa coupling at the Large Hadron Collider
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• Searches for rare and non-Standard Model decays of the Higgs boson
• Yukawas and trilinear Higgs terms from loops
• Search for rare decays of the Z and Higgs bosons to a J/$\psi$ or $\psi$(2S) meson and a photon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
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• A Private SUSY 4HDM with FCNC in the Up-sector