Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon
| Autor: | Chao, Zhou, Mao, Song, Gang, Li, Ya-Jin, Zhou, Jian-You, Guo |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Chinese Physics C Vol. 40, No. 12 (2016) 123105 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1674-1137/40/12/123105 |
| Popis: | In this paper, we investigate the decay of Higgs boson to $J/\psi(\Upsilon)$ 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 $H \to J/\psi(\Upsilon)+ \gamma$ direct production at the LO is significantly reduced by the NLO QCD corrections. For the indirect process, we calculate the $H \to \gamma^\ast\gamma$ with virtual $\gamma$ substantially decaying to $J/\psi(\Upsilon)$, 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 $H \to J/\psi(\Upsilon)+ \gamma$ 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. Comment: 10 pages, 5 figures |
| Databáze: | arXiv |
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