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

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Chao Zhou, Mao Song, Gang Li, Ya-Jin Zhou and Jian-You Guo. Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon[J]. Chinese Physics C, 2016, 40(12): 123105. doi: 10.1088/1674-1137/40/12/123105
Chao Zhou, Mao Song, Gang Li, Ya-Jin Zhou and Jian-You Guo. Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon[J]. Chinese Physics C, 2016, 40(12): 123105.  doi: 10.1088/1674-1137/40/12/123105 shu
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Received: 2016-07-18
Revised: 2016-09-26
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    Supported by National Natural Science Foundation of China (11305001, 11105083, 11205003)

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

    Corresponding author: Mao Song, songmao@mail.ustc.edu.cn
  • 1.  School of Physics and Material Science, Anhui University, Hefei 230601, China
  • 2.  School of Physics, Shandong University, Jinan 250100, China
Fund Project:  Supported by National Natural Science Foundation of China (11305001, 11105083, 11205003)

Abstract: In this paper, we investigate the decay of the 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→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→γ*γ 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→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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