CRunDec is "a C++ program for the running and decoupling of the strong coupling constant and quark masses", developed by Florian Herren and Matthias Steinhauser. Relevant references:
- "Version 3 of RunDec and CRunDec", Florian Herren, Matthias Steinhauser arXiv:1703.03751
- "CRunDec: a C++ package for running and decoupling of the strong coupling and quark masses", Barbara Schmidt, Matthias Steinhauser arXiv:1201.6149
- "RunDec: A Mathematica package for running and decoupling of the strong coupling and quark masses", K.G. Chetyrkin, Johann H. Kühn, M. Steinhauser arXiv:hep-ph/0004189
rundec-python is a Python package providing a thin wrapper around
pip install rundec
The API is analogous to
CRunDec, see the documentation.
import rundec crd = rundec.CRunDec() # compute alpha_s at the b quark mass scale with 3-loop accuracy crd.AlphasExact(0.1185, 91.1876, 4.18, 5, 3) # compute the b quark pole mass using the 2-loop conversion from the MSbar mass crd.mMS2mOS(4.18, None, 0.26, 4.18, 5, 2)
The wrapper was generated with SWIG.
The Windows wheels require Python 3.5+, on Linux and Mac OS Python 2.7+ is sufficient.