Double vector quarkonia production in exclusive Higgs boson decays

TL;DR

This paper calculates decay widths and branching fractions for the Higgs boson decaying into pairs of vector quarkonia, incorporating relativistic effects, to improve understanding of these rare processes.

Contribution

It provides the first detailed calculations of these exclusive decay modes with relativistic corrections in the Standard Model.

Findings

Calculated partial decay widths and branching fractions for specific Higgs decay channels.

Included relativistic corrections due to quark motion in mesons.

Results enhance predictions for rare Higgs decay processes.

Abstract

Partial decay widths and branching fractions are calculated for the exclusive decays of the Standard Model Higgs boson into a pair of vector quarkonium states, $ H\to J/\psi J/\psi, H\to \Upsilon \Upsilon, H\to J/\psi \phi, H\to J/\psi \Upsilon$, with relativistic corrections due to quark motion in mesons taken into account.