GM2Calc calculates the new physics contributions to the anomalous magnetic moment of the muon a_mu = (g-2)/2 in the real MSSM and in the Two-Higgs Doublet Model (THDM) at the 1- and leading 2-loop level. An estimate of the theory uncertainty associated with the calculation can also be provided. GM2Calc can be run from the command line reading SLHA, GM2Calc- specific or THDM input, and provides C, C++, Mathematica and Python interfaces to its library.

References: * Eur.Phys.J. C76 (2016) no.2, 62 [arXiv:1510.08071] * Eur.Phys.J. C82 (2022) no.3, 229 [arXiv:2110.13238]

The gm2calc-python package differs from the upstream in its use of the ctypes interface instead of cppyy to allow for compatibility with environments the have ROOT installed, as ROOT's vendored cppyy disallows cppyy to be installed in the same environment.