OneLOop: for the evaluation of one-loop scalar functions

TL;DR

OneLOop is a computational tool designed to accurately evaluate one-loop scalar functions across all relevant collider-physics scenarios, handling divergences and offering numerical integration options.

Contribution

It introduces a comprehensive, versatile program capable of evaluating one-loop scalar functions for all kinematic configurations, including divergence management and numerical routines.

Findings

Handles all UV and IR divergences within dimensional regularization.

Supports all relevant kinematic configurations for collider physics.

Provides routines for straightforward numerical integration.

Abstract

OneLOop is a program to evaluate the one-loop scalar 1-point, 2-point, 3-point and 4-point functions, for all kinematical configurations relevant for collider-physics, and for any non-positive imaginary parts of the internal squared masses. It deals with all UV and IR divergences within dimensional regularization. Furthermore, it provides routines to evaluate these functions using straightforward numerical integration.