SLHAplus: A library for implementing extensions of the standard model

We provide a library to facilitate the implementation of new models in codes such as matrix element and event generators or codes for computing dark matter observables. The library contains an SLHA reader routine as well as diagonalisation routines. This library is available in CalcHEP and micrOMEGAs. The implementation of models based on this library is supported by LanHEP and FeynRules.Program summaryProgram title: SLHAplus_1.3Catalogue identifier: AEHX_v1_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEHX_v1_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.: 6283No. of bytes in distributed program, including test data, etc.: 52 119Distribution format: tar.gzProgramming language: CComputer: IBM PC, MACOperating system: UNIX (Linux, Darwin, Cygwin)RAM: 2000 MBClassification: 11.1Nature of problem: Implementation of extensions of the standard model in matrix element and event generators and codes for dark matter observables.Solution method: For generic extensions of the standard model we provide routines for reading files that adopt the standard format of the SUSY Les Houches Accord (SLHA) file. The procedure has been generalized to take into account an arbitrary number of blocks so that the reader can be used in generic models including non-supersymmetric ones. The library also contains routines to diagonalize real and complex mass matrices with either unitary or bi-unitary transformations as well as routines for evaluating the running strong coupling constant, running quark masses and effective quark masses.Running time: 0.001 sec