Speaker
Wai Kin Lai
(University of Pittsburgh)
Description
Fixed-order QCD radiative corrections to the vector-boson and Higgs associated production channels, pp → V H (V = W ± , Z), at hadron colliders are well understood. We combine higher order perturbative QCD calculations with soft-gluon resummation of both threshold logarithms and logarithms which are important at low transverse momentum of the V H pair. We study the effects of both types of logarithms on the scale dependence of the total cross section and on various kinematic distributions. The next-to-next-to-next-to-leading logarithmic (NNNLL) resummed total cross sections at the LHC are almost identical to the fixed-order perturbative next-to-next-to-leading order (NNLO) rates, indicating the excellent convergence of the perturbative QCD series. Resummation of the V H transverse momentum (pT ) spectrum provides reliable results for small values of pT and suggests that implementing a jet-veto will significantly decrease the cross sections.
Authors
Prof.
Adam Leibovich
(University of Pittsburgh)
Ian Lewis
(Brookhaven National Laboratory)
Sally Dawson
(BNL)
Tao Han
(University of Pittsburgh)
Wai Kin Lai
(University of Pittsburgh)