SOFTSUSY: by Ben Allanach

Summary

This program provides a SUSY spectrum in the MSSM including flavour violation and with or without R-parity consistent with input Standard Model fermion mass/mixings and electroweak/strong coupling data. The R-parity violating mode now calculates neutrino masses and mixings to 1 loop. For beginners, watch the basic HOWTO get started video below. SOFTSUSY can be used in conjunction with other programs for many different particle physics calculations: see a SUSY tools review. See a graph of MSSM RGE evolution at SPS1a (feel free to use it).

References

If you use SOFTSUSY to write a paper, please cite

Latest Release

• source 3.3.1 (04/04/12)
  • RPV mode now works on Macs. In 3.3.0, the RPV mode returned a no rho convergence error. Thanks to Matthew McCullough for flagging the bug.
  • Added SLHA1 option to RPV output: in Block SOFTSUSY, set variable 10 equal to 1 to get SLHA1 style output.
  • Error flagging changed a little.
• source 3.3.0 (19/03/12)
  • Made RPV output more SLHA2 compliant - thanks to Peter Skands for flagging the issue
  • Streamlined object structure - display functions now return a reference
  • Negative scalar masses in SLHA input now give negative scalar mass squared at the input scale. Thanks to Patrick Meade for the suggestion.
  • Bug in the SLHA2 flavour mixing output: sometimes, TDIN input parameters and TEIN inputs would not be listed. This has now been fixed. Thanks to Pietro Slavich for flagging the issue.
  • Bug in the SLHA2 RPV neutrino output: information about the type of neutrino mass hierarchy was sometimes not output - it is now...
  • Compartmentalised SLHA2 output
  • Neutral scalar mixing for CPE/CPO neutral scalars have been added to RpvNeutrino object. Indeed, RpvNeutrino object SUPERCEDES the RpvSoftsusy object for the case of lepton-number violation.
  • Changes to rpvneutmain.cpp: including CKM mixing explicitly now (users may need it)
  • Bug-fixed flavour boundary conditions when non-universal Higgs masses have also been set

Comparisons With Other SUSY Spectrum Generators

• Precise Determination of the Neutral Higgs Boson Masses in the MSSM, B.C. Allanach, A. Djouadi, J.L. Kneur, W. Porod, P. Slavich, JHEP 0409 (2004) 044, hep-ph/0406166,
• Theoretical uncertainties in sparticle mass predictions from computational tools, B.C. Allanach, S. Kraml, W. Porod, JHEP 03 (2003) 045, hep-ph/0302102

Installation

The following releases contain a test program (main.cpp) and the SOFTSUSY library (libsoft.a, link with -L.libs -lsoft). There is also a Makefile: in linux, just unpack the files with (eg for softsusy-3.2)

> gunzip softsusy-3.2.tar.gz
> tar -xvf softsusy-3.2.tar 
> cd softsusy-3.2

> ./configure F77=gfortran
> make 

> ./softpoint.x
> ./softsusy.x
> ./rpvsoftsusy.x 
> ./rpvneut.x

If you have trouble with compilation, try this page.

Executable files: after installation

• softpoint.x: command-line interface. SLHA2, GMSB, AMSB, mSUGRA and general boundary conditions possible.
• softsusy.x: example C++ test program - loops over tan beta, printing out Higgs masses around CMSSM10.1.
• rpvsoftsusy.x: example R-parity violating test program - loops over l''_{323} for CMSSM10.1, printing out the RH stop mass.
• rpvneut.x: example neutrino mass calculating R-parity violating test program.

Source Files

Input and info files

• [README] contains installation instructions and a list of included files
• [slha2Input] is an alternative input file in the SUSY Les Houches Accord 2 format for CMSSM10.1
• [slha2Output] is the result of running with the above input file and includes flavour violation, for inclusion into codes like SusyBsg which include flavour corrections
• [outputTest] is the output from the test program in main.cpp
• [rpvOutputTest] is the output from the test program in rpvmain.cpp
• [lesHouchesInput] is an input file in the SUSY Les Houches Accord format for CMSSM10.1
• [lesHouchesOutput] is the result of running with the above input file, ie
  
• [rpvHouchesInput] is an alternative input file in the SUSY Les Houches Accord 2 format
• [rpvHouchesOutput] is the result of running with the above input file, ie
  softpoint.x leshouches < lesHouchesInput > lesHouchesOutput

Code

• [def.h] contains switches (options) and parameters such as default fermion masses, required accuracy etc
• List and description of files
• List and description of classes

Extensions

• Script for linking SoftSusy with FeynHiggs and HiggsBounds
• including possible one-loop effects due to particles in a calculable hidden sector, by Boaz Keren-Zur.

License

    SOFTSUSY Copyright (C) 2007 B.C. Allanach

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    See http://www.gnu.org/licenses/.  

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