CPsuperH2.3: an Updated Tool for Phenomenology in the MSSM with Explicit CP Violation

TL;DR

CPsuperH2.3 is an updated Fortran tool that enhances MSSM phenomenology analysis by including improved Higgs mass calculations, experimental constraints, and CP-violating observable predictions relevant for LHC and EDM experiments.

Contribution

It introduces significant updates to the CPsuperH tool, including improved Higgs mass calculations, experimental limit incorporations, and new CP-violation observables for MSSM analysis.

Findings

Enhanced Higgs mass and mixing calculations

Inclusion of recent experimental limits from LEP and CMS

New predictions for electric dipole moments of Mercury and Radium225

Abstract

We describe the Fortran code CPsuperH2.3, which incorporates the following updates compared with its predecessor CPsuperH2.0. It implements improved calculations of the Higgs-boson masses and mixing including stau contributions and finite threshold effects on the tau-lepton Yukawa coupling. It incorporates the LEP limits on the processes e^+ e^- to H_i Z, H_i H_j and the CMS limits on H_i to tau^+ tau^- obtained from 4.6/fb of data at a centre-of-mass energy of 7 TeV. It also includes the decay mode H_i to Z gamma and the Schiff-moment contributions to the electric dipole moments of Mercury and Radium225, with several calculational options for the case of Mercury. These additions make CPsuperH2.3 a suitable tool for analyzing possible CP-violating effects in the MSSM in the era of the LHC and a new generation of EDM experiments