TL;DR
This paper presents an extension of the expansion by regions technique integrated into pySecDec, enabling automated asymptotic expansions and efficient evaluation of integrals in high-energy physics calculations.
Contribution
It introduces a geometric perspective and implementation of expansion by regions within pySecDec, enhancing automated asymptotic expansion capabilities.
Findings
Automated asymptotic expansions now available in pySecDec.
Improved efficiency in evaluating dimensionally regulated integrals.
Validated with multiple example calculations.
Abstract
We discuss the technique of expansion by regions from a geometric perspective, and its implementation within pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The program offers an automated way to perform asymptotic expansions and provides a new mechanism for efficiently evaluating amplitudes, as well as individual integrals. The usage of the new features available within pySecDec is illustrated with several examples.
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