Abstract
We present methods to compute higher orders in the threshold expansion for the one-loop production of a Higgs boson in association with two partons at hadron colliders. This process contributes to the N3LO Higgs production cross section beyond the soft-virtual approximation. We use reverse unitarity to expand the phase-space integrals in the small kinematic parameters and to reduce the coefficients of the expansion to a small set of master integrals. We describe two methods for the calculation of the master integrals. The first was introduced for the calculation of the soft triple-real radiation relevant to N3LO Higgs production. The second uses a particular factorization of the three body phase-space measure and the knowledge of the scaling properties of the integral itself. Our result is presented as a Laurent expansion in the dimensional regulator, although some of the master integrals are computed to all orders in this parameter.
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ArXiv ePrint: 1505.04110
On leave from the “Fonds National de la Recherche Scientifique” (FNRS), Belgium. (Claude Duhr)
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Anastasiou, C., Duhr, C., Dulat, F. et al. Soft expansion of double-real-virtual corrections to Higgs production at N3LO. J. High Energ. Phys. 2015, 51 (2015). https://doi.org/10.1007/JHEP08(2015)051
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DOI: https://doi.org/10.1007/JHEP08(2015)051