Someone argues: 'The positron is the antiparticle of the electron
PHYSICS · Multi-part · Fermi University Physics · Particle Physics & Quantum Fields · Particles, interactions and experiment · Particles, interactions and experiment
Particle Physics, Ch The particle zoo and the four interactions
Problem
Someone argues: 'The positron is the antiparticle of the electron. Since every additive number reverses sign for the antiparticle, and mass is just another number attached to a particle, the positron's mass must be −0.511MeV/c2.'
((a)) Give the correct mass, charge, spin and lifetime of the positron.
((b)) State which of the four numbers actually reverse sign for an antiparticle, and which do not.