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Numerical Evaluation of Tensor Feynman Integrals in Euclidean Kinematics
Janusz Gluza, Krzysztof Kajda, Tord Riemann +1
For the investigation of higher order Feynman integrals, potentially with tensor structure, it is highly desirable to have numerical methods and automated tools for dedicated, but…
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Janusz Gluza, Krzysztof Kajda, Tord Riemann +1
Mellin-Barnes and sector decomposition methods are used to evaluate tensorial Feynman diagrams in the Euclidean kinematical region. Few software packages are shortly described and…
Analytic Computations of Massive One-Loop Amplitudes
Simon Badger, Ralf Sattler, Valery Yundin
We show some new applications of on-shell methods to calculate compact helicity amplitudes for t tbar production through gluon fusion. The rational and mass renormalisation contrib…