PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
In a typical β+ decay, a proton in the nucleus transforms into a neutron and a positron. Which additional particle is emitted so that charge and lepton number are conserved?
(a) a γ photon
(b) an electron neutrino (νe)
(c) a muon neutrino (νμ)
(d) an electron antineutrino (νˉe)