High-Precision Predictions for the LHC

by Alexander Huss (CERN)

Thursday, 31 October 2019 from to (Europe/Amsterdam)
at Nikhef ( H331 )
Both in terms of precision measurements and in the search for new physics, high-precision theory predictions are indispensable in our quest to fully exploit the potential of the LHC. Calculations at next-to-leading order (NLO) are now widely used in the experimental analyses and a conceptually solved problem on the theory side; coining the term of the “NLO revolution” for the rapid progress that was made over the past decade(s). However, the excellent performance of the LHC demands even more accurate predictions as low as the per-cent level for many standard-candle processes, which requires to include more terms of the perturbative series. Tremendous progress is being made in the calculation of predictions at NNLO and I will highlight recent results for hard QCD probes obtained using the Antenna subtraction method. I will further discuss the prospects of fully differential predictions at N3LO for the production of Higgs bosons in the gluon-fusion channel and how the Antenna subtraction method could be extended to this order.