Beta Decay [by] C.S. Wu [and] S.A. Moszkowski

allowed transitions angle angular correlation angular distribution angular momentum annihilation antineutrino approximation asymmetry atomic axial-vector B₁ Beta Decay calculated capture rate Chap charge conjugation circular polarization circularly components correction coupling constants cross section Decay scheme direction double ẞ decay effect electromagnetic emission emitted energy experiment experimental Fermi interaction forbidden spectra forbidden transitions ft values Gamow-Teller interaction Hamiltonian helicity invariance isobaric spin lepton lepton conservation log ft longitudinal polarization mc² measured mesons muon capture neutrino neutrinoless double neutron nonrelativistic nuclear matrix nuclear matrix elements nuclear ẞ decay nucleon nucleus observed obtain orbital P₁ parameter pion positrons proton pseudoscalar radiation ratio recoil relativistic rest mass reversal rotation scalar scattering selection rules shell model shown in Fig space inversion ẞ interaction ẞ particles ẞ spectrum theoretical theory of ẞ vector interaction wave function weak interactions zero