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Freezing In with Lepton Flavored Fermions

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arxiv 2103.03886 v2 pith:FUES2LJN submitted 2021-03-05 hep-ph astro-ph.COhep-ex

classification hep-phastro-ph.COhep-ex
keywords flavorleptonfermionsfreeze-ingroupmodelabsenceabsolutely
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

Dark, chiral fermions carrying lepton flavor quantum numbers are natural candidates for freeze-in. Small couplings with the Standard Model fermions of the order of lepton Yukawas are `automatic' in the limit of Minimal Flavor Violation. In the absence of total lepton number violating interactions, particles with certain representations under the flavor group remain absolutely stable. For masses in the GeV-TeV range, the simplest model with three flavors, leads to signals at future direct detection experiments like DARWIN. Interestingly, freeze-in with a smaller flavor group such as $SU(2)$ is already being probed by XENON1T.

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Forward citations

Cited by 2 Pith papers

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