Astronomy:Feebly interacting particle
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] 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.[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] proposed massive gravitons as feebly Interacting particle candidates.[3][4]
See also
- WIMP – weakly interacting massive particle
- WISP – weakly interacting sub-eV / slight / slender particle
References
- ↑ 1.0 1.1 Lanfranchi, Gaia; Pospelov, Maxim; Schuster, Philip (2020-11-04). "The search for feebly-interacting particles". Annual Review of Nuclear and Particle Science 71: 279–313. doi:10.1146/annurev-nucl-102419-055056.
- ↑ Agrawal, Prateek; Bauer, Martin; Beacham, James; Berlin, Asher; Boyarsky, Alexey; Cebrian, Susana et al. (2021-02-24). "Feebly-interacting particles: FIPs 2020 Workshop report". The European Physical Journal C 81 (11): 1015. doi:10.1140/epjc/s10052-021-09703-7. Bibcode: 2021EPJC...81.1015A.
- ↑ 3.0 3.1 Cai, Haiying; Cacciapaglia, Giacomo; Lee, Seung J. (2022-02-23). "Massive gravitons as feebly interacting dark matter candidates". Physical Review Letters 128 (8): 081806. doi:10.1103/PhysRevLett.128.081806. ISSN 0031-9007. PMID 35275667. Bibcode: 2022PhRvL.128h1806C. https://link.aps.org/doi/10.1103/PhysRevLett.128.081806.
- ↑ Lea, Robert (2022-04-09). "Dark matter could be a cosmic relic from extra dimensions". https://www.livescience.com/dark-matter-particles-from-extra-dimensions.
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