Physics:Photino

From HandWiki
Short description: Hypothetical superpartner of the photon
Photino
CompositionElementary particle
StatisticsFermionic
InteractionsElectromagnetic
StatusHypothetical
Symbolγ͂
electric charge0 e
Spin1/2

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

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


References

  1. ↑ "Tracking down the missing mass" (in en). New Scientist (Reed Business Information): 32. 9 January 1986. https://books.google.com/books?id=Ri8kegHjaoYC&pg=PA32. Retrieved 19 June 2020. 
  2. ↑ STENGER, V. J. (1985). "Photinos from cosmic sources". Nature 317 (6036): 411–413. doi:10.1038/317411a0. Bibcode: 1985Natur.317..411S. 
  3. ↑ 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. 
  4. ↑ STENGER, V. J. (3 October 1985). "Photinos from cosmic sources". Nature 317 (6036): 411–413. doi:10.1038/317411a0. Bibcode: 1985Natur.317..411S. 
  5. ↑ 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. 


he:פוטינו



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