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.[1] In part due to this property, it is considered a candidate for the composition of dark matter.[2]
The supermultiplet containing an axion and axino has been suggested as the origin of supersymmetry breaking, where the supermultiplet gains an F-term expectation value.[3]
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Abe, Nobutaka; Moroi, Takeo; Yamaguchi, Masahiro (2002). "Anomaly-Mediated Supersymmetry Breaking with Axion". Journal of High Energy Physics. 1 (1): 10. arXiv:hep-ph/0111155. Bibcode:2002JHEP...01..010A. doi:10.1088/1126-6708/2002/01/010. S2CID 15280422.
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Hooper, Dan; Wang, Lian-Tao (2004). "Possible evidence for axino dark matter in the galactic bulge". Physical Review D. 70 (6): 063506. arXiv:hep-ph/0402220. Bibcode:2004PhRvD..70f3506H. doi:10.1103/PhysRevD.70.063506. S2CID 118153564.
The axino is a hypothetical elementary particle predicted by some theories of particle physics. Peccei–Quinn theory attempts to explain the observed phenomenon...
axion is called the axino, the scalar superpartner is called the saxion or dilaton. They are all bundled in a chiral superfield. The axino has been predicted...
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