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A New Two Higgs Doublet Model
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We propose an extension of the Standard Model by extending the EW symmetry to SU(2)_L x U(1) x Z_2 and introducing three SU(2)_L x U(1) singlet right handed neutrinos, N_R, and an additional Higgs doublet, phi. While the SM gauge bosons and the quarks and charged leptons acquire masses from the spontaneous breaking of SU(2)_L x U(1) symmetry at the electroweak scale, the neutrinos acquire masses from the spontaneous breaking of the discrete Z_2 symmetry at a scale of 10^{-2} eV. In addition to providing a new mechanism for generating tiny masses for the neutrinos, the model has interesting implications for neutrinoless double beta decay and the Higgs signals at high energy colliders, as well as in astrophysics and cosmology.
Forward citations
Cited by 4 Pith papers
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Forbidden neutrinogenesis
A neutrinophilic two-Higgs-doublet model with Dirac neutrinos can generate the observed baryon asymmetry through finite-temperature 'forbidden' leptogenesis, favoring normal neutrino mass ordering and 0 < δ_CP < π.
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Forward Searches for Heavy Neutrinos and $Z'$ Bosons at FCC-hh
Projections indicate the FPF at FCC-hh can extend reach for light long-lived heavy neutrinos and Z' bosons in chiral U(1) models beyond existing experiments via meson decays and bremsstrahlung.
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Minimal Dirac seesaw dark matter
A Z4-symmetric Dirac seesaw makes the imaginary part of a seesaw scalar a stable dark matter candidate and links its phenomenology to gravitational wave and CMB observables.
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Signals for a 2HDM with $Z'$ at the LHC
In a U(1)-extended two-Higgs-doublet model, scalar decays to a light Z' produce multilepton signals at the LHC, with discovery potential for scalar masses above 350 GeV at 3000 fb^-1.
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