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arXiv · 1607.02704

Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon

Zhou Chao·Song Mao·Li Gang·Zhou Ya-Jin·Guo Jian-You
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Abstract

In this paper, we investigate the decay of Higgs boson to $J/ψ(Υ)$ plus a photon based on NRQCD factorization. For the direct process, we calculate the decay width up to QCD NLO. We find that the decay width for process $H \to J/ψ(Υ)+ γ$ direct production at the LO is significantly reduced by the NLO QCD corrections. For the indirect process, we calculate the $H \to γ^\astγ$ with virtual $γ$ substantially decaying to $J/ψ(Υ)$, including all the SM Feynman diagrams. The decay width of indirect production is much larger than the direct decay width. Since it is very clean in experiment, the $H \to J/ψ(Υ)+ γ$ decay could be observable at a 14 TeV LHC and it also offers a new way to probe the Yukawa coupling and New Physics at the LHC.

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Zhou Chao, Song Mao, Li Gang, Zhou Ya-Jin, Guo Jian-You. 2016-11-18. Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon. https://doi.org/10.1088/1674-1137%2F40%2F12%2F123105

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