Outputs (5)

Numerical scattering amplitudes with pySecDec (2023)
Journal Article
Heinrich, G., Jones, S., Kerner, M., Magerya, V., Olsson, A., & Schlenk, J. (2024). Numerical scattering amplitudes with pySecDec. Computer Physics Communications, 295, Article 108956. https://doi.org/10.1016/j.cpc.2023.108956

We present a major update of the program pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The new version enables the evaluation of multi-loop integrals as well as amplitudes in a highly distributed and flexible... Read More about Numerical scattering amplitudes with pySecDec.

The on-shell expansion: from Landau equations to the Newton polytope (2023)
Journal Article
Gardi, E., Herzog, F., Jones, S., Ma, Y., & Schlenk, J. (2023). The on-shell expansion: from Landau equations to the Newton polytope. Journal of High Energy Physics, 2023(7), Article 197. https://doi.org/10.1007/jhep07%282023%29197

We study the application of the method of regions to Feynman integrals with massless propagators contributing to off-shell Green’s functions in Minkowski spacetime (with non-exceptional momenta) around vanishing external masses, pi2→0. This on-shell... Read More about The on-shell expansion: from Landau equations to the Newton polytope.

A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec (2019)
Journal Article
Borowka, S., Heinrich, G., Jahn, S., Jones, S., Kerner, M., & Schlenk, J. (2019). A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec. Computer Physics Communications, 240, 120-137. https://doi.org/10.1016/j.cpc.2019.02.015

The purely numerical evaluation of multi-loop integrals and amplitudes can be a viable alternative to analytic approaches, in particular in the presence of several mass scales, provided sufficient accuracy can be achieved in an acceptable amount of t... Read More about A GPU compatible quasi-Monte Carlo integrator interfaced to pySecDec.

NLO and off-shell effects in top quark mass determinations (2018)
Journal Article
Heinrich, G., Maier, A., Nisius, R., Schlenk, J., Schulze, M., Scyboz, L., & Winter, J. (2018). NLO and off-shell effects in top quark mass determinations. Journal of High Energy Physics, 2018(7), Article 129. https://doi.org/10.1007/jhep07%282018%29129

We study the impact of different theoretical descriptions of top quark pair production on top quark mass measurements in the di-lepton channel. To this aim, the full NLO corrections to pp→W+W−bb¯¯→(e+νe)(μ−ν¯¯¯μ)bb¯¯ production are compared to calcul... Read More about NLO and off-shell effects in top quark mass determinations.

pySecDec: a toolbox for the numerical evaluation of multi-scale integrals (2017)
Journal Article
Borowka, S., Heinrich, G., Jahn, S., Jones, S., Kerner, M., Schlenk, J., & Zirke, T. (2017). pySecDec: a toolbox for the numerical evaluation of multi-scale integrals. Computer Physics Communications, 2018(222), 313-326. https://doi.org/10.1016/j.cpc.2017.09.015

We present pySecDec, a new version of the program SecDec, which performs the factorization of dimensionally regulated poles in parametric integrals, and the subsequent numerical evaluation of the finite coefficients. The algebraic part of the program... Read More about pySecDec: a toolbox for the numerical evaluation of multi-scale integrals.