mr: a C++ library for the matching and running of the Standard Model parameters

TL;DR

The paper introduces 'mr', a C++ library that accurately computes Standard Model parameters at high energies using advanced loop corrections and provides a Mathematica interface.

Contribution

It offers a reliable C++ library for high-precision calculation of Standard Model parameters, including multi-loop corrections and a Mathematica interface.

Findings

Includes full two-loop precision for initial conditions.

Performs evolution with full three-loop renormalization group equations.

Incorporates four-loop pure QCD corrections.

Abstract

We present the C++ program library mr that allows us to reliably calculate the values of the running parameters in the Standard Model at high energy scales. The initial conditions are obtained by relating the running parameters in the $\overline{\mathrm{MS}}$ renormalization scheme to observables at lower energies with full two-loop precision. The evolution is then performed in accordance with the renormalization group equations with full three-loop precision. Pure QCD corrections to the matching and running are included through four loops. We also provide a Mathematica interface for this program library.