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arXiv · 1309.0980

Non-decoupling two-loop corrections to (g-2)_μ from fermion/sfermion loops in the MSSM

Helvecio Fargnoli·Christoph Gnendiger·Sebastian Passehr·Dominik Stöckinger·Hyejung Stöckinger-Kim
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Abstract

Two-loop contributions to the muon (g-2) from fermion/sfermion loops in the MSSM are presented, and an overview of the full MSSM prediction for (g-2) is given with emphasis on the behaviour in scenarios which are compatible with LHC data, including scenarios with large mass splittings. Compared to all previously known two-loop contributions, the fermion/sfermion-loop contributions can yield the largest numerical results. The new contributions contain the important universal quantities Δα and Δρ, and for large sfermion masses the contributions are non-decoupling and logarithmically enhanced. We find up to 15% (30%) corrections for sfermion masses in the 20 TeV (1000 TeV) range.

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Helvecio Fargnoli, Christoph Gnendiger, Sebastian Passehr, Dominik Stöckinger, Hyejung Stöckinger-Kim. 2013-11-07. Non-decoupling two-loop corrections to (g-2)_μ from fermion/sfermion loops in the MSSM. https://doi.org/10.1016/j.physletb.2013.09.034

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