REAP (Renormalization group Evolution of Angles and Phases) is a Mathematica package for solving the renormalization group equations (RGE) of the quantities relevant for neutrino masses, for example the dimension-5 neutrino mass operator, the Yukawa matrices and the gauge couplings.
The package MixingParameterTools allows to extract the lepton masses, mixing angles and CP phases from the mass matrices of the neutrinos and the charged leptons. Thus, the running of the neutrino mass matrix calculated by REAP can be translated into the running of the mixing parameters and the mass eigenvalues. MixingParameterTools can also be useful as a stand-alone application in order to study textures without running, and it is not bound to the analysis of neutrino masses only but may be used for quark and superpartner mass matrices as well.
In order to install both REAP and MPT, select a file from the "REAP_incl_MPT" section at the bottom of the downloads page and follow the instructions in the user guide. If you use Linux or MacOS, you can use the *.installer.sh file. When it is executed, e.g. sh REAP_MPT-1.9.3.installer.sh, it will automatically install the package in the local Mathematica applications directory.
Analogously, you can also download and install MPT and REAP separately. Note, however, that REAP will only work if MPT is installed as well.
REAP and MPT are maintained by
If you use REAP or MPT in a scientific publication or talk, please give proper academic credit to us by citing our paper: JHEP 0503 (2005) 024 [hep-ph/0501272].
Please contact us in case of questions or problems with REAP-MPT by sending an email to . Similarly contact us, if you want to extend or modify REAP-MPT and need access to our source repository.
The development of REAP and MPT has been and is financially supported by: