Problems & Exercises
(a)Yes. , , all lepton family numbers are 0 before and after, spontaneous since mass greater before reaction.
(b)
(a) 216
(b) There are more baryons observed because we have the 6 antiquarks and various mixtures of quarks (as for the π-meson) as well.
(a)803 MeV
(b) 938.8 MeV
(c) The annihilation energy of an extra electron is included in the total energy.