Thermal dark matter via the flavon portal
| Title: | Thermal dark matter via the flavon portal |
|---|---|
| Authors: | Alvarado, Carlos, Elahi, Fatemeh, Raj, Nirmal |
| Source: | Phys. Rev. D 96, 075002 (2017) |
| Publication Year: | 2017 |
| Collection: | High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Phenomenology |
| More Details: | Dark matter (DM) is added to the Froggatt-Nielsen (FN) mechanism, and conditions for its successful freezeout identified. Requesting the FN scale $\Lambda_{\text{FN}}$ to be the cutoff of the theory renders freezeout scenarios surprisingly few. Fermionic DM is typically charged under $U(1)_{\text{FN}}$, with the dominant annihilation channel a CP-even flavon + CP-odd flavon. A minimal case is when the DM-flavon coupling strength is $\mathcal{O}(1)$, with several implications: (1) the DM mass is $\mathcal{O}$(100 GeV - 1 TeV), thanks to the WIMP coincidence, (2) requiring perturbativity of couplings puts a lower $and$ upper limit on the flavor scale, 2 TeV $\lesssim \Lambda_{\text{FN}} \lesssim 14~$TeV, on account of its relation to DM mass and couplings, (3) DM is a "secluded WIMP" effectively hidden from collider and direct detection searches. Limits on the masses of dark matter and mediators from kaon mixing measurements constitute the best constraints, surpassing Xenon1T, Fermi-LAT, and the LHC. Future direct detection searches, and collider searches for missing energy plus a single jet/bottom/top, are promising avenues for discovery. Comment: 14 pages, 6 figures; v2: typos corrected, references added, version accepted for publication in PRD |
| Document Type: | Working Paper |
| DOI: | 10.1103/PhysRevD.96.075002 |
| Access URL: | http://arxiv.org/abs/1706.03081 |
| Accession Number: | edsarx.1706.03081 |
| Database: | arXiv |
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