Axino

Axino

The axino is a hypothetical elementary particle predicted by some theories of particle physics. Peccei-Quinn theory attempts to explain the observed phenomenon known as the strong CP problem by introducing a hypothetical real scalar particle called the axion. Adding supersymmetry to the model predicts the existence of a fermionic superpartner for the axion, the axino and a bosonic superpartner the saxion. They are all bundled up in a chiral superfield.

The axino has been predicted to be the lightest supersymmetric particle in such a model. [cite journal |author=Abe, Nobutaka, Takeo Moroi and Masahiro Yamaguchi |title=Anomaly-Mediated Supersymmetry Breaking with Axion |journal=Journal of High Energy Physics |issue=2002 |date=Jan 2002] In part due to this property, it is considered a candidate for the composition of dark matter. [cite journal |author=Hooper, Dan and Lian-Tao Wang |title=Possible evidence for axino dark matter in the galactic bulge |journal=Physical Review D |issue=70 |date=2004-09-03]

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