Soft gluon resummation in the signal-background interference process of gg(→ h∗) → ZZ
In this talk, I will show a precise theoretical prediction for the signal-background interference process of gg(→ h∗) → ZZ, which is useful to constrain the Higgs boson decay width and to measure Higgs couplings to the SM particles. And the soft gluon resummation can increase the approximate NNLO result by about 10% at both the 8TeV and 13TeV LHC. The theoretical uncertainties including the scale, uncalculated multi-loop amplitudes of the background and PDF + αs are roughly O(10%) at NNLL′.
HEP Aug27 flyer