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

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arxiv 1510.08071 v2 pith:XN5QZPNN submitted 2015-10-27 hep-ph

Peter Athron , Markus Bach , Helvecio G. Fargnoli , Christoph Gnendiger , Robert Greifenhagen , Jae-hyeon Park , Sebastian Pa{ss}ehr , Dominik Stöckinger
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Hyejung Stöckinger-Kim Alexander Voigt
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classification hep-ph
keywords inputgm2calcon-shellbetacalculationcontributionscorrectionsfile
verification ladder T0 review T1 audit T2 compute T3 formal
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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, $(g-2)_\mu$. The code computes $(g-2)_\mu$ 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 $\tan\beta$ resummation so that it is valid for arbitrarily high values of $\tan\beta$, 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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Cited by 1 Pith paper

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  1. Revisiting CMSSM with Non-Universal Gaugino Masses under Current Constraints

    hep-ph 2024-12 conditional novelty 4.0 of 10

    Current data restrict the g~-SUGRA scenario to tanβ ≳ 5 and M0 ≳ 20 tanβ GeV, with large muon g-2 contributions difficult and future colliders needed to cover the remaining parameter space.

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