Addendum: Improved MSSM Higgs mass calculation using the 3-loop FlexibleEFTHiggs approach including $x_t$-resummation

TL;DR

This paper introduces a new C++ program that implements a 3-loop calculation method for the Higgs boson mass in the MSSM, achieving higher precision by including advanced resummation techniques.

Contribution

It provides a stand-alone C++ tool implementing the 3-loop FlexibleEFTHiggs approach with $x_q$ resummation for precise Higgs mass calculations in the MSSM.

Findings

Implementation of the 3-loop calculation method

Enhanced precision in Higgs mass predictions

Availability of a new computational tool

Abstract

In this addendum we present the stand-alone C++ program MSSMEFTHiggs3L, which implements the 3-loop FlexibleEFTHiggs approach to calculate the lightest CP-even Higgs boson pole mass in the real MSSM at N$^3$LL and N$^3$LO with $x_q$ resummation, presented in JHEP 07 (2020) 197 (arXiv:2003.04639).