Non-supersymmetric spin-3/2 dark matter with baryon-violating portals can explain the relic abundance through UV and Boltzmann-suppressed freeze-in, with viable parameter space constrained by indirect detection, direct detection, and LHC monojet searches.
Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
5 Pith papers cite this work. Polarity classification is still indexing.
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abstract
The theoretical and experimental issues relevant to neutrinoless double-beta decay are reviewed. The impact that a direct observation of this exotic process would have on elementary particle physics, nuclear physics, astrophysics and cosmology is profound. Now that neutrinos are known to have mass and experiments are becoming more sensitive, even the non-observation of neutrinoless double-beta decay will be useful. If the process is actually observed, we will immediately learn much about the neutrino. The status and discovery potential of proposed experiments are reviewed in this context, with significant emphasis on proposals favored by recent panel reviews. The importance of and challenges in the calculation of nuclear matrix elements that govern the decay are considered in detail. The increasing sensitivity of experiments and improvements in nuclear theory make the future exciting for this field at the interface of nuclear and particle physics.
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Ab initio IM-NCCI calculations on 48Ca establish linear correlations between 0νββ and 2νββ NMEs from 34 chiral Hamiltonians, constraining M^{0ν} to 1.30-1.65 using experimental 2ν data after applying a fitted quenching factor.
The ground-state to ground-state electron-capture Q value of 113Sn is 1039.25(19) keV, with an allowed transition at 9.60(20) keV showing enhanced endpoint sensitivity due to proximity to L-shell binding energies.
Electroluminescence yield measurements in xenon reveal a modest 5% change in the slope of the reduced yield Y/p above 5 bar pressure.
A new neutrino mass matrix texture under A4 x multiple Z symmetries predicts normal hierarchy, theta23 octant, and bounds on phases and masses in a seesaw model.
citing papers explorer
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Decaying spin-3/2 dark matter from baryon number violation
Non-supersymmetric spin-3/2 dark matter with baryon-violating portals can explain the relic abundance through UV and Boltzmann-suppressed freeze-in, with viable parameter space constrained by indirect detection, direct detection, and LHC monojet searches.
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Ab initio correlations between neutrinoless and two-neutrino double-beta decays in $^{48}$Ca
Ab initio IM-NCCI calculations on 48Ca establish linear correlations between 0νββ and 2νββ NMEs from 34 chiral Hamiltonians, constraining M^{0ν} to 1.30-1.65 using experimental 2ν data after applying a fitted quenching factor.
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Precise determination of electron-capture $Q$ value of $^{113}$Sn decay related to electron neutrino mass measurements
The ground-state to ground-state electron-capture Q value of 113Sn is 1039.25(19) keV, with an allowed transition at 9.60(20) keV showing enhanced endpoint sensitivity due to proximity to L-shell binding energies.
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Electroluminescence Yield Measurements in Xenon Gas with the NEXT-DEMO++ Detector
Electroluminescence yield measurements in xenon reveal a modest 5% change in the slope of the reduced yield Y/p above 5 bar pressure.
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The Triadic Texture: Neutrino Predictions, Viable Vacuum, and Phenomenological Constraints
A new neutrino mass matrix texture under A4 x multiple Z symmetries predicts normal hierarchy, theta23 octant, and bounds on phases and masses in a seesaw model.