pySecDec: a toolbox for the numerical evaluation of multi-scale integrals

Understand

We present pySecDec, a new version of the program SecDec, which performs the factorisation of dimensionally regulated poles in parametric integrals, and the subsequent numerical evaluation of the finite coefficients.

• The algebraic part of the program is now written in the form of python modules, which allow a very flexible usage.
• The optimization of the C++ code, generated using FORM, is improved, leading to a faster numerical convergence.
• The new version also creates a library of the integrand functions, such that it can be linked to user-specific codes for the evaluation of matrix elements in a way similar to analytic integral libraries.