Papers › Higgs boson decay to charmonia via c-quark fragmentation
Higgs boson decay to charmonia via c-quark fragmentation
Tao Han, Adam K. Leibovich, Yang Ma, Xiao-Ze Tan
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We calculate the decay branching fractions of the Higgs boson to J/ψ and η_c via the charm-quark fragmentation mechanism for the color-singlet and color-octet states in the framework of non-relativistic QCD. The decay rates are governed by the charm-quark Yukawa coupling, unlike the decay H→J/ψ+ γ, which is dominated by the γ^*-J/ψ mixing. We find that the decay branching fractions can be about 2 ×10⁻⁵ for H→cc̅+J/ψ, and 6 ×10⁻⁵ for H→cc̅+η_c. We comment on the perspective of searching for the Higgs boson to J/ψ transition at the High-Luminosity LHC for testing the charm-quark Yukawa coupling.
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