Física Ciencias Exactas Double beta decay Neutrino Nuclear physics Particle physics Physics Nuclear masses Pion production Asymmetry parameter Binding energies Computation Gross theory of beta decay Hamiltonian (quantum mechanics) Hypernuclear decay Hypernuclei Neutrino scattering Nuclear theory Nucleon One-meson-exchange model ∆ resonance 1-Metil-4-fenil-1,2,3,6-Tetrahidropiridina Adjustment parameters Antineutrino mass Asymmetry Axial-vector coupling constant Background Beta decay Carbon-12 Charged majoron model