Neutrinos in a Sterile Throat

Abstract

We consider field-theoretic models of a warped extra dimension with multiple throats, in which fermions that are singlets of the Standard Model gauge group propagate in a separate throat from the Standard Model fields, which we call the sterile throat. The singlets mix with Standard Model fields via interactions localized on the UV brane that connects the two throats. This leads to three, light, mostly-active, Majorana neutrinos via a higher-dimensional see-saw mechanism, together with Kaluza-Klein towers of mostly-sterile neutrinos, whose scale is set by the warp factor in the sterile throat and can be very low if the throat is deep. We suggest that a model of this kind may explain all the neutrino data, reconciling the LSND result with astrophysical constraints.

27 pages, 1 figure. Sign error corrected

References in corpus (10)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• The Minimal Composite Higgs Model
• Holography for fermions
• See-Saw Energy Scale and the LSND Anomaly
• Twisted Flavors and Tri/bi-Maximal Neutrino Mixing
• Explaining LSND by a decaying sterile neutrino
• The Throat as a Randall-Sundrum Model with Goldberger-Wise Stabilization
• Off-the-Wall Higgs in the Universal Randall-Sundrum Model
• Field Theory on Multi-throat Backgrounds

Cited by in corpus (10)

• Multiple dark matter scenarios from ubiquitous stringy throats
• Low-Energy Signals from Kinetic Mixing with a Warped Abelian Hidden Sector
• Low-Energy Probes of a Warped Extra Dimension
• Light Neutrinos from a Mini-Seesaw Mechanism in Warped Space
• Secluded Dark Matter Coupled to a Hidden CFT
• Anomaly Holography, the Wess-Zumino-Witten Term, and Electroweak Symmetry Breaking
• Anomaly Holography
• Neutrino Mass and $\mu \to e+\gamma$ from a Mini-Seesaw
• Broken Symmetry as a Stabilizing Remnant
• Composite Dark Matter and Neutrino Masses from a Light Hidden Sector