The reaction is written on the board

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

The reaction

^{14}_{6}\text{C} \to\, ^{14}_{7}\text{N} + e^{-}

is written on the board. Which additional particle must be included for the reaction to satisfy all conservation laws? (a) An electron antineutrino

\bar{\nu}_e

(b) An electron neutrino

\nu_e

\gamma

(d) A positron