Dark Matter through the Axion Portal

By Y. Nomura, Jesse Thaler. 2008

230 citations recorded by the source corpus.

Motivated by the galactic positron excess seen by PAMELA and ATIC/PPB-BETS, we propose that dark matter is a TeV-scale particle that annihilates into a pseudoscalar 'axion'. The positron excess and the absence of an antiproton or gamma ray excess constrain the axion mass and branching ratios. In the simplest realization, the axion is associated with a Peccei-Quinn symmetry, in which case it has a mass around 360-800 MeV and decays into muons. We present a simple and predictive supersymmetric model implementing this scenario, where both the Higgsino and dark matter obtain masses from the same source of TeV-scale spontaneous symmetry breaking.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4e2e4102efb84d4ce6f07c078d599abdf962c44a

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Citations in the corpus

Rare $B$ Decays as Tests of the Standard Model (2016, background): “[299] proposes an axion with 360–800 MeV and an energy scale, f , at which the symmetry is broken in the range 1–3 TeV.”
Constraining light dark matter with low-energy e+e− colliders (2013, unknown): “[38–55] and references therein.”
A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, background): “7This has sometimes been called the “axion portal” [257].”
ALPtraum: ALP production in proton beam dump experiments (2015, background): “Popular examples for such Pseudo-Goldstone bosons are axion-like particles, which are loosely defined as (pseudo-)scalar particles coupled to the SM particles by dimension-5 couplings to two gauge bosons or derivative interactions to fermions (the so-called axion portal [13, 15]).”