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arXiv · 1510.08071

GM2Calc: Precise MSSM prediction for $(g - 2)$ of the muon

Peter Athron·Markus Bach·Helvecio G. Fargnoli·Christoph Gnendiger·Robert Greifenhagen·Jae-hyeon Park·Sebastian Paßehr·Dominik Stöckinger·Hyejung Stöckinger-Kim·Alexander Voigt
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Abstract

We present GM2Calc, a public C++ program for the calculation of MSSM contributions to the anomalous magnetic moment of the muon, $(g-2)_μ$. The code computes $(g-2)_μ$ precisely, by taking into account the latest two-loop corrections and by performing the calculation in a physical on-shell renormalization scheme. In particular the program includes a $\tanβ$ resummation so that it is valid for arbitrarily high values of $\tanβ$, as well as fermion/sfermion-loop corrections which lead to non-decoupling effects from heavy squarks. GM2Calc can be run with a standard SLHA input file, internally converting the input into on-shell parameters. Alternatively, input parameters may be specified directly in this on-shell scheme. In both cases the input file allows one to switch on/off individual contributions to study their relative impact. This paper also provides typical usage examples not only in conjunction with spectrum generators and plotting programs but also as C++ subroutines linked to other programs.

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Peter Athron, Markus Bach, Helvecio G. Fargnoli, Christoph Gnendiger, Robert Greifenhagen, Jae-hyeon Park, Sebastian Paßehr, Dominik Stöckinger, Hyejung Stöckinger-Kim, Alexander Voigt. 2015-11-10. GM2Calc: Precise MSSM prediction for $(g - 2)$ of the muon. https://doi.org/10.1140/epjc%2Fs10052-015-3870-2

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