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CPsuperH2.3: an updated tool for phenomenology in the MSSM with explicit CP violation. (English) Zbl 1296.81008

Summary: 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 \(H_i\to \overline{\tau}\tau\) obtained from 4.6 fb\(^{-1}\) of data at a center-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 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.

MSC:

81-04 Software, source code, etc. for problems pertaining to quantum theory
81-08 Computational methods for problems pertaining to quantum theory
81Q60 Supersymmetry and quantum mechanics
81V25 Other elementary particle theory in quantum theory
81R40 Symmetry breaking in quantum theory
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