Higgs boson decays into a pair of heavy vector quarkonia

Abstract

Rare Higgs decays into a pair of heavy vector quarkonia, $h\to VV$ ($V=J/\Psi$, ${\rm Y}$ etc.), have been investigated in the standard model. Different from the past literature in which these decays are thought to be only dominated by the longitudinally polarized final states, we also include the transitions, which proceed through $h\to {\gamma }^{\ast }{\gamma }^{\ast }$/$h\to V{\gamma }^{\ast }$, followed by ${\gamma }^{\ast }\to V$. The final vector quarkonia via these ways are dominantly transversely polarized. Our calculation however shows that these transitions could lead to significant contributions to the decay rate, especially for the charmonium final states. The total branching ratios of these processes are predicted to be around $10^{-10}$, far below the current experimental upper bounds. Hopefully, experimental studies of these very rare decays in future high-precision experimental facilities might be interesting both to test the standard model and to look for new physics scenarios.

9 pages, 4 figures. Typos corrected, published version

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Cited by in corpus (7)

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• Relativistic corrections to paired production of charmonium and bottomonium in decays of the Higgs boson
• Production of dileptonic bound states in the Higgs boson decay
• Note on rare $Z$-boson decays to double heavy quarkonia
• Higgs boson decays to $B_c$ meson in the fragmentation-function approach
• QCD one-loop correction to Higgs boson decay into quarkonium-pair
• Rare few-body decays of the Standard Model Higgs boson