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Feebly interacting particle

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Feebly interacting particles (FIPs) are subatomic particles defined by having extremely suppressed interactions with the Standard Model (SM) bosons and / or fermions. These particles are potential thermal dark matter candidates, extending the model of weakly interacting massive particles (WIMPs) to include weakly interacting sub-eV particles (WISPs) and others. FIP physics is also known as dark-sector physics.

Candidates

FIP candidates could be massive (FIMP / WIMP) or massless and coupled to the SM particles through some minimal coupling strength. The light FIPs are theorized to be dark matter candidates, and, they provide an explanation for the origin of neutrino masses and CP symmetry in strong interactions.

Neutrinos technically qualify as FIPs, but usually when the acronym "FIP" is used, it is intended to refer to some other, as-yet unknown particle. Cai, Cacciapaglia, and Lee (2022) proposed massive gravitons as feebly Interacting particle candidates.

See also

  • WIMP – weakly interacting massive particle
  • WISP – weakly interacting sub-eV / slight / slender particle

References

  1. ^ Lanfranchi, Gaia; Pospelov, Maxim; Schuster, Philip (4 November 2020). "The search for feebly-interacting particles". Annual Review of Nuclear and Particle Science. 71: 279–313. arXiv:2011.02157. doi:10.1146/annurev-nucl-102419-055056. S2CID 226246183.
  2. Agrawal, Prateek; Bauer, Martin; Beacham, James; Berlin, Asher; Boyarsky, Alexey; Cebrian, Susana; et al. (24 February 2021). "Feebly-interacting particles: FIPs 2020 Workshop report". The European Physical Journal C. 81 (11): 1015. arXiv:2102.12143. Bibcode:2021EPJC...81.1015A. doi:10.1140/epjc/s10052-021-09703-7. S2CID 232035757.
  3. ^ Cai, Haiying; Cacciapaglia, Giacomo; Lee, Seung J. (23 February 2022). "Massive gravitons as feebly interacting dark matter candidates". Physical Review Letters. 128 (8): 081806. arXiv:2107.14548. Bibcode:2022PhRvL.128h1806C. doi:10.1103/PhysRevLett.128.081806. ISSN 0031-9007. PMID 35275667. S2CID 236635132.
  4. Lea, Robert (9 April 2022). "Dark matter could be a cosmic relic from extra dimensions". livescience.com. Archived from the original on 23 April 2022. Retrieved 22 April 2022.


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