SuSpect: A Fortran code for the Supersymmetric and Higgs particle spectrum in the MSSM
Abstract
We present the FORTRAN code SuSpect version 2.3, which calculates the Supersymmetric and Higgs particle spectrum in the Minimal Supersymmetric Standard Model (MSSM). The calculation can be performed in constrained models with universal boundary conditions at high scales such as the gravity (mSUGRA), anomaly (AMSB) or gauge (GMSB) mediated supersymmetry breaking models, but also in the nonuniversal MSSM case with Rparity and CP conservation. Care has been taken to treat important features such as the renormalization group evolution of parameters between low and high energy scales, the consistent implementation of radiative electroweak symmetry breaking and the calculation of the physical masses of the Higgs bosons and supersymmetric particles taking into account the dominant radiative corrections. Some checks of important theoretical and experimental features, such as the absence of nondesired minima, large finetuning in the electroweak symmetry breaking condition, as well as agreement with precision measurements can be performed. The program is simple to use, selfcontained and can easily be linked to other codes; it is rather fast and flexible, thus allowing scans of the parameter space with several possible options and choices for model assumptions and approximations. Catalogue identifier:ADYR_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/ADYR_v1_0 Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland Licensing provisions:none Programming language used:FORTRAN 77 Computer:Unix machines, PC No. of lines in distributed program, including test data, etc.:21 821 No. of bytes in distributed program, including test data, etc.:249 657 Distribution format:tar.gz Operating system:Unix (or Linux) RAM:approximately 2500 Kbytes Number of processors used:1 processor Nature of problem:SuSpect calculates the supersymmetric and Higgs particle spectrum (masses and some other relevant parameters) in the unconstrained Minimal Supersymmetric Standard Model (MSSM), as well as in constrained models (cMSSMs) such as the minimal Supergravity (mSUGRA), the gauge mediated (GMSB) and anomaly mediated (AMSB) Supersymmetry breaking scenarii. The following features and ingredients are included: renormalization group evolution between low and high energy scales, consistent implementation of radiative electroweak symmetry breaking, calculation of the physical particle masses with radiative corrections at the one and twoloop level. Solution method:The main methods used in the code are: (1) an (adaptative fourthorder) Runge Kutta type algorithm (following a standard algorithm described in “Numerical Recipes”), used to solve numerically a set of coupled differential equations resulting from the renormalization group equations at the twoloop level of the perturbative expansions; (2) diagonalizations of mass matrices; (3) some mathematical (Spence, etc) functions resulting from the evaluation of one and twoloop integrals using the Feynman graphs techniques for radiative corrections to the particle masses; (4) finally, some fixedpoint iterative algorithms to solve nonlinear equations for some of the relevant output parameters. Restrictions:(1) The code is limited at the moment to real input parameters. (2) It also does not include flavor nondiagonal terms which are possible in the most general soft supersymmetry breaking Lagrangian. (3) There are some (mild) limitations on the possible range of values of input parameter, i.e. not any arbitrary values of some input parameters are allowed: these limitations are essentially based on physical rather than algorithmic issues, and warning flags and other protections are installed to avoid as much as possible execution failure if unappropriate input values are used. Running time:between 1 and 3 seconds depending on options, with a 1 GHz processor.
 Publication:

Computer Physics Communications
 Pub Date:
 March 2007
 DOI:
 10.1016/j.cpc.2006.11.009
 arXiv:
 arXiv:hepph/0211331
 Bibcode:
 2007CoPhC.176..426D
 Keywords:

 12.60.Jv;
 11.30.Qc;
 12.10.g;
 12.15.Lk;
 14.80.Cp;
 14.80.Ly;
 Supersymmetric models;
 Spontaneous and radiative symmetry breaking;
 Unified field theories and models;
 Electroweak radiative corrections;
 Nonstandardmodel Higgs bosons;
 Supersymmetric partners of known particles;
 High Energy Physics  Phenomenology;
 Astrophysics;
 High Energy Physics  Experiment
 EPrint:
 44 pages, 1 figure. Program updated and text shortened. The program can be found at http://www.lpta.univmontp2.fr/~kneur/Suspect