Higgs-boson production through gluon fusion at NNLO QCD with parton showers

We discuss how the ${\mathrm{UN}}^2\mathrm{LOPS}$ scheme for matching next-to-next-to-leading order (NNLO) calculations to parton showers can be applied to processes with large higher-order perturbative QCD corrections. We focus on Higgs-boson production through gluon fusion as an example. We also present an NNLO fixed-order event generator for this reaction.

Figure 1

Rapidity spectrum (left) and transverse momentum spectrum (right) of the Higgs boson, computed at fixed order and compared between Sherpa and HNNLO .

Figure 2

Rapidity spectrum of the Higgs boson in individual matching (left) and factorized matching (right). See Sec. 4 for details.

Figure 3

Transverse momentum spectrum of the Higgs boson in individual matching (left) and factorized matching (right). See Sec. 4 for details.