Photino
| Composition | Elementary particle |
|---|---|
| Statistics | Fermionic |
| Family | Fermion |
| Interactions | Electromagnetic |
| Status | Hypothetical |
| Symbol | γ͂ |
| Electric charge | 0 e |
| Spin | 1/2 |
A photino is a hypothetical subatomic particle, the fermion WIMP superpartner of the photon predicted by supersymmetry.[1][2] 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.[3] It is proposed that photinos are produced by sources of ultra-high-energy cosmic rays.[4]
Photino numbers
[edit]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.[5] It mixes with the superpartners of the Z boson (zino) and the neutral higgs (higgsino) to form the neutralino.
See also
[edit]- Supersymmetry – Symmetry between bosons and fermions
- Photon – Elementary particle or quantum of light
- Dual photon – Hypothetical particle dual to the photon
- Electromagnetism – Fundamental interaction between charged particles
References
[edit]- ^ "Tracking down the missing mass". New Scientist. Reed Business Information: 32. 9 January 1986. Retrieved 19 June 2020.
- ^ STENGER, V. J. (1985). "Photinos from cosmic sources". Nature. 317 (6036): 411–413. Bibcode:1985Natur.317..411S. doi:10.1038/317411a0. S2CID 4312378.
- ^ Information, Reed Business (9 January 1986). "Tracking down the missing mass". New Scientist (1490): 32. Retrieved 24 September 2015.
{{cite journal}}:|first1=has generic name (help) - ^ STENGER, V. J. (3 October 1985). "Photinos from cosmic sources". Nature. 317 (6036): 411–413. Bibcode:1985Natur.317..411S. doi:10.1038/317411a0. S2CID 4312378.
- ^ Srednicki, M. (2012). Particle Physics and Cosmology: Dark Matter. Elsevier. p. 283. ISBN 978-0-444-59609-3. Retrieved 19 June 2020.
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