Tracking detectors achieve 1σ mechanism discrimination in neutrinoless double-beta decay with a few events and 3σ with roughly 10 events, rising to about 25 events under realistic reconstruction uncertainties.
Novellaet al.(NEXT), Demonstration of neutrinoless double beta decay searches in gaseous xenon with NEXT, JHEP09, 190, arXiv:2305.09435 [nucl-ex]
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Chiral EFT derivation of the Δ⁻ → p e⁻ e⁻ amplitude including long-range neutrino loops, short-range counterterms, pion-mass dependence for collinear electrons, and a long-range prediction in the degenerate Δ-nucleon mass limit.
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Statistical sensitivity of neutrinoless double-beta decay exchange mechanism discrimination by tracking experiments
Tracking detectors achieve 1σ mechanism discrimination in neutrinoless double-beta decay with a few events and 3σ with roughly 10 events, rising to about 25 events under realistic reconstruction uncertainties.
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Neutrinoless double-beta decay of the $\Delta^-$ resonance
Chiral EFT derivation of the Δ⁻ → p e⁻ e⁻ amplitude including long-range neutrino loops, short-range counterterms, pion-mass dependence for collinear electrons, and a long-range prediction in the degenerate Δ-nucleon mass limit.