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T: Fachverband Teilchenphysik

T 12: QCD (Theorie) 2

T 12.4: Vortrag

Dienstag, 5. März 2013, 17:30–17:45, WIL-A120

2 → 4 particle phase space master integrals for Higgs boson production — •Maik Hoeschele, Jens Hoff, Alexey Pak, Matthias Steinhauser, and Takahiro Ueda — Institut für Theoretische Teilchenphysik, Karlsruhe Intitute of Technology, 76128 Karlsruhe, Germany

In the Standard Model the inclusive cross section for higgs production via gluon fusion at NNNLO demands the calculation of real corrections where up to 3 additional particles are emitted. The occuring phase space diagrams are related to the imaginary part of forward scattering diagrams, allowing for a reduction to a small set of master integrals. The reduction tables serve as building blocks for differential equations for the occuring master integrals with the soft limit as boundary condition. In the talk we consider this limit and discuss a convenient parametrization of the four-particle phase space. Furthermore we demonstrate its suitability by showing results for some exemplary integrals.