Bubble collisions in a seesaw model produce right-handed neutrinos that source novel gravitational waves detectable by LISA, ET, and LVK while allowing the lightest RHN to explain dark matter or enable leptogenesis.
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Minkowski, Phys
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Flavon fields from a TM1 flavor symmetry neutrino model can act as scalar singlets to achieve successful TeV-scale leptogenesis and reproduce observed neutrino data without mass degeneracy among right-handed neutrinos.
Non-holomorphic modular symmetry in a Type-I seesaw model fits normal hierarchy neutrino data with chi2 min 7.06 but rules out inverted hierarchy.
STCF can reach |V_eN|^2 values one to two orders of magnitude below current bounds for heavy neutral leptons via displaced-vertex searches from ALP decays in D-meson production.
The Left-Right Inverse Seesaw model generates a non-decoupling scalar operator that enhances the differential forward-backward CP asymmetry A_CP^FB(s) near K* and K0* resonances in τ → Kπν_τ while leaving the integrated asymmetry too small to explain the BaBar result.
In a two-triplet Type-II seesaw, resonant leptogenesis at the TeV scale dynamically requires small Yukawa couplings that suppress observable lepton flavor violation as a direct consequence of successful baryogenesis.
JUNO's initial 59-day dataset constrains sterile neutrino mass splittings between 10^{-5} and 10^{-2} eV² down to sin²2θ₁₄ ~ O(10^{-1}) and scalar NSI |η_ee| below O(10^{-2}).
In an E6-derived ψ'SM extension, a singlet fermion acts as freeze-in dark matter with relic density set by scalar decays for masses from a few MeV to hundreds of GeV, while type-I seesaw neutrinos simultaneously produce the observed baryon asymmetry via leptogenesis.
CLIC offers superior discovery potential for doubly charged Higgs bosons in the Higgs triplet model compared to HL-LHC, reaching masses up to 1.2 TeV in gauge-like scenarios and high significance in Yukawa-like regions via same-sign lepton decays.
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Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter
Bubble collisions in a seesaw model produce right-handed neutrinos that source novel gravitational waves detectable by LISA, ET, and LVK while allowing the lightest RHN to explain dark matter or enable leptogenesis.