Photino Explained

Photino
Composition:Elementary particle
Statistics:Fermionic
Group:Fermion
Interaction:Electromagnetic
Status:Hypothetical
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

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.

Notes and References

  1. Tracking down the missing mass . . 9 January 1986 . 32 . 19 June 2020 . Reed Business Information . en.
  2. Photinos from cosmic sources . V. J. . STENGER. 317. 6036. 10.1038/317411a0. Nature. 411–413. 1985Natur.317..411S. 1985. 4312378 .
  3. 9 January 1986 . Tracking down the missing mass . . 1490 . 32 . 24 September 2015. Information. Reed Business.
  4. STENGER. V. J.. Photinos from cosmic sources. Nature. 3 October 1985. 317. 6036. 10.1038/317411a0. 411–413. 1985Natur.317..411S. 4312378.
  5. Book: Srednicki . M. . Particle Physics and Cosmology: Dark Matter . 2012 . Elsevier . 978-0-444-59609-3 . 283 . 19 June 2020 . en.

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