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arXiv · 1603.03333

A Dark Sector for $g_\mu-2$, $R_K$ and a Diphoton Resonance

Geneviève Bélanger·Cédric Delaunay
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Abstract

We revisit a set of dark sector models, motivated by anomalies observed in $B$ decays and the muon anomalous magnetic moment, in the light of a recently reported diphoton excess around 750$\,$GeV. Interpreting the excess as a scalar resonance associated with the symmetry breaking sector of a dark gauge group, we show that a diphoton cross section of few fb can be accomodated, together with anomalies in $R_K$ and $g_\mu-2$ within a minimal dark sector model. The resulting prominent collider signatures are in the form of wide resonant signals into top and muon pair final states below $\sim1\,$TeV. The model further predicts a dark matter candidate, yet with a significantly underabundant relic density, unless produced by an appropriate non-thermal mechanism.

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Geneviève Bélanger, Cédric Delaunay. 2016-03-10. A Dark Sector for $g_\mu-2$, $R_K$ and a Diphoton Resonance. https://doi.org/10.1103/physrevd.94.075019

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