precision calculations in the mssm higgs boson sector with feynhiggs 2 14

• DOI: 10.3204/pubdb-2018-05542
• Publication Date: 2020-04-01
• Authors: Wolfgang Hollik; Georg Weiglein; Sebastian Paßehr; Sven Heinemeyer; Sven Heinemeyer; Henning Bahl; Heidi Rzehak; T. Hahn
• Keywords: new physics; minimal supersymmetric standard model; Higgs particle: doublet: 2; FOS: Physical sciences; mass: calculated; mass: correction; threshold: correction; programming; 01 natural sciences; High Energy Physics - Phenomenology; effective field theory; High Energy Physics - Phenomenology (hep-ph); Higgs particle: mass; [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; 0103 physical sciences; supersymmetry; info:eu-repo/classification/ddc/530; numerical calculations; MSSM; Higgs-boson observables

28 pages, 3 figures; matches published version (will appear as CPC 50th anniversary article)<br/>We present an overview of the status and recent developments of FeynHiggs (current version: 2.14.3) since version 2.12.2. The main purpose of FeynHiggs is the calculation of the Higgs-boson masses and other physical observables in the MSSM. For a precise prediction of the Higgs-boson masses for low and high SUSY scales, state-of-the-art fixed-order and effective-field-theory calculations are combined. We first discuss improvements of the fixed-order calculation, namely an optional $\overline{\text{DR}}$ renormalization of the stop sector and a renormalization of the Higgs sector ensuring the chosen input mass to be equivalent with the corresponding physical mass. Second, we describe improvements of the EFT calculation, i.e. an implementation of non-degenerate threshold corrections as well as an interpolation for complex parameters. Lastly, we highlight some improvements of the code structure easing future extensions of FeynHiggs to models beyond the MSSM.<br/>