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 .[ 1]
Candidates
FIP candidates could be massive (FIMP / WIMP) or massless and coupled to the SM particles through some minimal coupling strength .[ 1] dark matter candidates, and, they provide an explanation for the origin of neutrino masses and CP symmetry in strong interactions .[ 2]
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)[ 3] massive gravitons as feebly Interacting particle candidates.[ 3] [ 4]
See also
WIMP – weakly interacting massive particleWISP – weakly interacting sub-eV / slight / slender particle
References
^ a b
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 .
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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 .
^ a b
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 .
^ 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 .
