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Natural TeV-Scale Left-Right Seesaw for Neutrinos and Experimental Tests
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Natural TeV-Scale Left-Right Seesaw for Neutrinos and Experimental Tests
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We present a TeV-scale left-right ultraviolet completion of type-I seesaw for neutrino masses based on the $SU(2)_L\times SU(2)_R\times U(1)_{B-L}$ gauge group without parity, which leads to "large" light-heavy neutrino mixing while keeping the neutrino masses small in a natural manner guaranteed by discrete symmetries. We point out specific observable implications of this class of models if the $SU(2)_R$-breaking scale is of order 5 TeV, in searches for lepton flavor violating processes such as $\mu\to e\gamma$, $\mu\to 3 e$ and $\mu-e$ conversion in nuclei, and lepton number violating processes such as neutrinoless double beta decay as well as at the LHC. In particular, if the upper limit on BR$(\mu\to e\gamma)$ improves by one order of magnitude, a large range of the parameters of the model would be ruled out.
Forward citations
Cited by 2 Pith papers
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Loop-Level Lepton Flavor Violation and Diphoton Signals in the Minimal Left-Right Symmetric Model
Recasting axion limits onto the one-loop H3 couplings of the minimal left-right symmetric model excludes the right-handed scale up to 2×10^9 GeV and could eventually probe 6×10^11 GeV.
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Radiative Dirac neutrino masses and dark matter in a $U(1)_{B-L}$ extended model
A U(1) extension of the Standard Model generates Dirac neutrino masses at one loop and provides a stable dark matter candidate via a residual discrete symmetry.
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