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A photino is a hypothetical subatomic particle, the fermion WIMP superpartner of the photon predicted by supersymmetry. It is an example of a gaugino. Even though no photino has ever been observed so far, it is one of the candidates for the lightest supersymmetric particle in the universe. It is proposed that photinos are produced by sources of ultra-high-energy cosmic rays.
Photinos have a lepton number 0, baryon number 0, and spin 1/2. With an R-parity of −1 it is a possible candidate for dark matter. It mixes with the superpartners of the Z boson (zino) and the neutral higgs (higgsino) to form the neutralino.
- Physics:Supersymmetry – Symmetry between bosons and fermions
- Physics:Photon – Elementary particle or quantum of light
- Physics:Dual photon – Hypothetical elementary particle that is a dual of the photon under electric–magnetic duality
- Physics:Electromagnetism – Science of electricity and magnetism
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- STENGER, V. J. (1985). "Photinos from cosmic sources". Nature 317 (6036): 411–413. doi:10.1038/317411a0. Bibcode: 1985Natur.317..411S.
- Information, Reed Business (9 January 1986). "Tracking down the missing mass". New Scientist (1490): 32. https://books.google.com/books?id=Ri8kegHjaoYC&pg=PA32. Retrieved 24 September 2015.
- STENGER, V. J. (3 October 1985). "Photinos from cosmic sources". Nature 317 (6036): 411–413. doi:10.1038/317411a0. Bibcode: 1985Natur.317..411S.
- Srednicki, M. (2012) (in en). Particle Physics and Cosmology: Dark Matter. Elsevier. p. 283. ISBN 978-0-444-59609-3. https://books.google.com/books?id=XI59041hwfMC&pg=PA283. Retrieved 19 June 2020.
Original source: https://en.wikipedia.org/wiki/Photino. Read more