期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP08(2015)051
关键词
QCD Phenomenology; NLO Computations
资金
- Swiss National Science Foundation (SNF) [200021-143781, 200020-149517]
- European Commission through the ERC [320651]
- FP7 Marie Curie Initial Training Network LHCPhenoNet [PITN-GA-2010-264564]
- U.S. Department of Energy [DE-AC02-07CH11359]
- Fonds National de la Recherche Scientifique (FNRS), Belgium
- Swiss National Science Foundation (SNF) [200020_149517, 200021_143781] Funding Source: Swiss National Science Foundation (SNF)
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 (NLO)-L-3 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 (NLO)-L-3 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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