Constraining the Axion Portal with B -> K l+ l-

Details Constraining the Axion Portal with B -> K l+ l- Constraining the Axion Portal with B -> K l+ l-

2009-11-30

arxiv.org/abs/0911.5355v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 4 figures; v2: to match version to appear in PRD

Scientific paper

We investigate the bounds on axionlike states from flavor-changing neutral current b->s decays, assuming the axion couples to the standard model through mixing with the Higgs sector. Such GeV-scale axions have received renewed attention in connection with observed cosmic ray excesses. We find that existing B->K l+ l- data impose stringent bounds on the axion decay constant in the multi-TeV range, relevant for constraining the "axion portal" model of dark matter. Such bounds also constrain light Higgs scenarios in the next-to-minimal supersymmetric standard model. These bounds can be improved by dedicated searches in B-factory data and at LHCb.

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