VBF Higgs production at NNLO and beyond

Tuesday, 01 November 2016 at 11:15, in Y16 G05 - Campus Irchel

We present an extensive study of vector boson fusion Higgs (VBF) production; fully differential at the next-to-next-to-leading order level (NNLO), and inclusively at next-to-next-to-next-to-leading order (N3LO). Both calculations are performed in the structure function approximation, where the VBF process is treated as a double deep inelastic scattering. For the differential calculation a new subtraction method, “projection-to-Born”, is introduced and applied. We study VBF production in a number of scenarios relevant for the LHC and for Future Circular Colliders (FCC). We find NNLO corrections after typical cuts of 5 − 6% while differential distributions show corrections of up to 10 − 12% for some standard observables. For the inclusive calculation we find NLO corrections at the order of 1 − 2 per mille. We conclude by presenting some ongoing and preliminary results on the merging of VBF Hjj and Hjjj production.