Neutrino Masses from Neutral Top Partners

Abstract

We present theories of `Natural Neutrinos' in which neutral fermionic top partner fields are simultaneously the right-handed neutrinos (RHN), linking seemingly disparate aspects of the Standard Model structure: a) The RHN top partners are responsible for the observed small neutrino masses, b) They help ameliorate the tuning in the weak scale and address the little hierarchy problem, and c) The factor of $3$ arising from $N_c$ in the top-loop Higgs mass corrections is countered by a factor $3$ from the number of vector-like generations of RHN. The RHN top partners may arise in pseudo-Nambu-Goldstone-Boson (pNGB) Higgs models such as the Twin Higgs, as well as more general Composite, Little, and Orbifold Higgs scenarios, and three simple example models are presented. This framework firmly predicts a TeV-scale seesaw, as the RHN masses are bounded to be below the TeV scale by naturalness. The generation of light neutrino masses relies on a collective breaking of lepton number, allowing for comparatively large neutrino Yukawa couplings and a rich associated phenomenology. The structure of the neutrino mass mechanism realizes in certain limits the Inverse or Linear classes of seesaw. Natural Neutrino models are testable at a variety of current and future experiments, particularly in tests of lepton universality, searches for lepton flavor violation, and precision electroweak and Higgs coupling measurements possible at high energy $e^{+}{e}^{-}$ and hadron colliders.

18 pages, 5 figures; v2: references added, additional discussion of proton decay

References in corpus (25)

• Updated fit to three neutrino mixing: status of leptonic CP violation
• Neutrinos and Collider Physics
• Unitarity of the Leptonic Mixing Matrix
• Non-unitarity of the leptonic mixing matrix: Present bounds and future sensitivities
• Signatures for Majorana neutrinos at hadron colliders
• The Higgs boson from an extended symmetry
• Direct Bounds on Electroweak Scale Pseudo-Dirac Neutrinos from $\sqrt{s}=8$ TeV LHC Data
• On the description of non-unitary neutrino mixing
• The Twin Higgs mechanism and Composite Higgs
• Imprints of massive inverse seesaw model neutrinos in lepton flavor violating Higgs boson decays
• Neutral Naturalness from the Orbifold Higgs
• A Supersymmetric Twin Higgs
• A Holographic Twin Higgs Model
• Heavy Majorana Neutrinos from $W\gamma$ Fusion at Hadron Colliders
• Prospects of Heavy Neutrino Searches at Future Lepton Colliders
• Colorless Top Partners, a 125 GeV Higgs, and the Limits on Naturalness
• Lepton flavor violation in low-scale seesaw models: SUSY and non-SUSY contributions
• Arbitrary mass Majorana neutrinos in neutrinoless double beta decay
• On the Interpretation of Top Partners Searches
• Leptogenesis with TeV Scale Inverse Seesaw in SO(10)
• A Composite Twin Higgs Model
• The Dark Top
• Leptogenesis with Linear, Inverse or Double Seesaw
• A naturally light Higgs without light Top Partners
• A Little Twin Higgs Model

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• Improved bounds on the heavy neutrino productions at the LHC
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• A Quirky Probe of Neutral Naturalness
• Twin SIMPs
• Viable Twin Cosmology from Neutrino Mixing
• Mirror Twin Higgs Cosmology: Constraints and a Possible Resolution to the $H_0$ and $S_8$ Tensions
• The spontaneous ${\mathbb{Z}}_2$ breaking Twin Higgs
• Towards a No-Lose Theorem for Naturalness
• Jet substructure shedding light on heavy Majorana neutrinos at the LHC
• Composite Twin Dark Matter
• Light Hidden Mesons through the Z Portal
• Discovering the Twin Higgs Boson with Displaced Decays
• Heavy neutrinos from gluon fusion
• Testing the Scalar Sector of the Twin Higgs Model at Colliders
• Pair production of heavy neutrinos in next-to-leading order QCD at the hadron colliders in the inverse seesaw framework
• Dark Spectroscopy
• Hypercharged Naturalness
• Singleton Portals to the Twin Sector
• Collider Signals of the Mirror Twin Higgs through the Hypercharge Portal
• Twin Quark Dark Matter From Cogenesis
• Search for light long-lived particles decaying to displaced jets in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
• Breaking Mirror Twin Color
• The Hierarchy Problem: From the Fundamentals to the Frontiers
• Review of Neutral Naturalness
• Signatures of an $S_3$-Orbifold Higgs Model
• Theory Advances in BSM Physics