Speaker
Description
Diboson processes being the key to study the electroweak triple gauge-boson couplings, triboson processes pave the way to investigate the quartic. Moreover, with leptonic decay products from multiple gauge bosons, they provide dominant backgrounds to many New Physics searches. With the increasing statistics collected by the LHC, and in particular in view of the HL-LHC running phase, precise predictions beyond the present NLO results are required to make the best out of the measurements. Exact two-loop amplitudes being yet unknown for triboson processes beyond triphoton production, a suitable estimation of these contributions is required. Studies on diboson production, where exact amplitudes are available, give us confidence on the applicability of this procedure and the robustness of our related error estimates. This approach allows us to present first differential predictions for triboson processes, together with their leptonic decay modes, that may be claimed to be NNLO-accurate.
