CPsuperH2.3: An updated tool for phenomenology in the MSSM with explicit CP violation

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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−→HiZ,HiHj and the CMS limits on Hi→τ̄τ obtained from 4.6 fb−1 of data at a center-of-mass energy of 7 TeV. It also includes the decay mode Hi→Zγ and the Schiff-moment contributions to the electric dipole moments of Mercury and Radium 225, 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.11The program may be obtained from http://www.hep.man.ac.uk/u/jslee/CPsuperH.html, or by contacting the first author at jslee@jnu.ac.kr. Program summaryProgram title: CPsuperH2.3Catalogue identifier: ADSR_v3_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/ADSR_v3_0.htmlProgram obtainable from: CPC Program Library, Queen’s University, Belfast, N. IrelandLicensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.htmlNo. of lines in distributed program, including test data, etc.: 24058No. of bytes in distributed program, including test data, etc.: 158721Distribution format: tar.gzProgramming language: Fortran77.Computer: PC running under Linux and computers in Unix environment.Operating system: Linux.RAM: 32 MBClassification: 11.1.Does the new version supersede the previous version?: YesCatalogue identifier of previous version: ADSR_v2_0Journal reference of previous version: Comput. Phys. Comm. 180(2009)312Nature of problem:The calculations of mass spectrum, decay widths and branching ratios of the neutral and charged Higgs bosons in the Minimal Supersymmetric Standard Model with explicit CP violation have been improved. The program is based on renormalization-group-improved diagrammatic calculations that include dominant higher-order logarithmic and threshold corrections, b-quark and τ-lepton Yukawa-coupling resummation effects and improved treatment of Higgs-boson pole-mass shifts. The couplings of the Higgs bosons to the Standard Model gauge bosons and fermions, to their supersymmetric partners and all the trilinear and quartic Higgs-boson self-couplings are also calculated. Also included are a full treatment of the 4×4 (2×2) neutral (charged) Higgs propagator matrix together with the center-of-mass dependent Higgs-boson couplings to gluons and photons, and an integrated treatment of several B-meson observables. The new implementations include the EDMs of Thallium, neutron, Mercury, Deuteron, Radium, and muon, as well as the anomalous magnetic moment of muon, (gμ−2), the top-quark decays, improved calculations of the Higgs-boson masses and mixing including stau contributions, the LEP limits, and the CMS limits on Hi→ττ̄. It also implements the decay mode Hi→Zγ and includes the corresponding Standard Model branching ratios of the three neutral Higgs bosons in the array GAMBRN(IM,IWB = 2,IH).Solution method:One-dimensional numerical integration for several Higgs-decay modes and EDMs, iterative treatment of the threshold corrections and Higgs-boson pole masses, and the numerical diagonalization of the neutralino mass matrix.Reasons for new version:Mainly to provide the full calculations of the EDMs of Thallium, neutron, Mercury, Deuteron, Radium, and muon as well as (gμ−2), improved calculations of the Higgs-boson masses and mixing including stau contributions, the LEP limits, the CMS limits on Hi→ττ̄, the top-quark decays, Hi→Zγ decay, and the corresponding Standard Model branching ratios of the three neutral Higgs bosons.Summary of revisions:Full calculations of the EDMs of Thallium, neutron, Mercury, Deuteron, Radium, and muon as well as (gμ−2). Improved treatment of Higgs-boson masses and mixing including stau contributions. The LEP limits. The CMS limits on Hi→ττ̄. The top-quark decays. The Hi→Zγ decay. The corresponding Standard Model branching ratios of the three neutral Higgs bosons.Running time:Less than 1.0 s.