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.
Dirac neutrinos from a second Higgs doublet
2 Pith papers cite this work. Polarity classification is still indexing.
abstract
We propose a minimal extension of the Standard Model in which neutrinos are Dirac particles and their tiny masses are explained without requiring tiny Yukawa couplings. A second Higgs doublet with a tiny vacuum expectation value provides neutrino masses while simultaneously improving the naturalness of the model by allowing a heavier Standard Model-like Higgs boson consistent with electroweak precision data. The model predicts a mu to e gamma rate potentially detectable in the current round of experiments, as well as distinctive signatures in the production and decay of the charged Higgs H+ of the second doublet which can be tested at future colliders. Neutrinoless double beta decay is absent.
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fields
hep-ph 2years
2026 2verdicts
UNVERDICTED 2roles
background 1polarities
background 1representative citing papers
The paper identifies promising parameter regions for observing same-sign tetralepton events from charged Higgs pair and single production decaying to muons and heavy neutral leptons at μTRISTAN.
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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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Same-Sign Tetralepton Signature at $\mu$TRISTAN
The paper identifies promising parameter regions for observing same-sign tetralepton events from charged Higgs pair and single production decaying to muons and heavy neutral leptons at μTRISTAN.