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Differential decay rates of CP-even and CP-odd Higgs bosons to top and bottom quarks at NNLO QCD

2018; Springer Nature; Volume: 2018; Issue: 7 Linguagem: Inglês

10.1007/jhep07(2018)159

1127-2236

W. Bernreuther, Long Chen, Zong-Guo Si,

High-Energy Particle Collisions Research

A bstract We consider the decay of a neutral Higgs boson of arbitrary CP nature to a massive quark antiquark pair at next-to-next-to-leading order in perturbative QCD. Our analysis is made at the differential level using the antenna subtraction framework. We apply our general set-up to the decays of a CP-even and CP-odd heavy Higgs boson to a top-quark top-antiquark pair and to the decay of the 125 GeV Higgs boson to a massive bottom-quark bottom-antiquark pair. In the latter case we calculate, in particular, the two-jet, three-jet, and four-jet decay rates and, for two-jet events, the energy distribution of the leading jet.