Consequences of a Pati-Salam unification of the electroweak-scale active ${\nu }_R$ model

Abstract

If right-handed neutrinos are {\em not} singlets under the electroweak gauge group as it was proposed in a recent model, they can acquire electroweak scale masses and are thus accessible experimentally in the near future. When this idea is combined with quark-lepton unification à la Pati-Salam, one is forced to introduce new neutral particles which are singlets under the Standard Model (SM). These "sterile neutrinos" which exist in both helicities and which are different in nature from the popular particles with the same name can have their own seesaw with masses in the keV range for the lighter of the two eigenstates. The keV sterile neutrinos have been discussed in the literature as warm dark matter candidates with wide ranging astrophysical consequences such as structure formation, supernova asymetries, pulsar kicks, etc..In addition, the model contains W-like and Z-like heavy gauge bosons which might be accessible at the LHC or the ILC. An argument is presented on why, in this model, it is natural to have four families which can obey existing constraints.

arXiv comment19 double-column pages, RevTex. Streamlined version to appear in Nucl. Phys. B

References in corpus (40)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Sterile Neutrinos as Dark Matter
• The $\nu$MSM, Dark Matter and Neutrino Masses
• Sterile Neutrino Hot, Warm, and Cold Dark Matter
• Mass and Flavor Mixing Schemes of Quarks and Leptons
• Massive sterile neutrinos as warm Dark Matter
• Four Generations and Higgs Physics
• Sterile neutrinos, dark matter, and the pulsar velocities in models with a Higgs singlet
• Quarks and Leptons Beyond the Third Generation
• How to find neutral leptons of the nuMSM?
• Extra Families, Higgs Spectrum and Oblique Corrections
• A possible symmetry of the $\nu$MSM
• Lightest sterile neutrino abundance within the nuMSM
• Signatures for Majorana neutrinos at hadron colliders
• Seesaw at LHC
• Relic keV sterile neutrinos and reionization
• Progress in the physics of massive neutrinos
• Bounds on heavy sterile neutrinos revisited
• t' at the LHC: the physics of discovery
• The discovery of the fourth family at the LHC: what if?
• A model of electroweak-scale right-handed neutrino mass
• Sterile neutrinos as subdominant warm dark matter
• Experimental constraints on fourth generation quark masses
• Gauge Trimming of Neutrino Masses
• Fourth Generation CP Violation Effect on B -> K pi, phi K and rho K in NLO PQCD
• Sterile neutrinos: direct mixing effects versus induced mass matrix of active neutrinos
• The heavy quark search at the LHC
• Sterile neutrinos
• Minimal SU(5) Resuscitated by Long-Lived Quarks and Leptons
• Petite Unification of Quarks and Leptons: Twenty Two Years After
• Majorana Mass Zeroes from Triplet VEV without Majoron Problem
• Electroweak-scale mirror fermions, $\mu \to e\gamma$ and $\tau \to \mu \gamma$
• Four Generation CP Violation in B -> phi K^0, pi^0 K^0, eta' K^0 and Hadronic Uncertainties
• Connecting Dark Energy to Neutrinos with an Observable Higgs Triplet
• Hierarchy and Anarchy in Quark Mass Matrices, or Can Hierarchy Tolerate Anarchy?
• On Neutrino Masses and Family Replication
• Fourth Generation b-prime decays into b + Higgs
• A Model of Quark and Lepton Masses I: The Neutrino Sector
• Quark-lepton mass unification at TeV scales

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• On neutrino and charged lepton masses and mixings: A view from the electroweak-scale right-handed neutrino model
• Electroweak scale neutrinos and decaying dark matter
• Dynamical Electroweak Symmetry Breaking in the model of electroweak-scale right-handed neutrinos