Assertion: electron's momentum | /r/HasProperty | conserved
Facets:
Source sentences:
text: Since total angular momentum must be conserved, including orbital and spin angular momentum, beta decay occurs by a variety of quantum state transitions to various nuclear angular momentum or spin states, known as "Fermi" or "Gamow–Teller" transitions.
text: Momentum can be conserved if the two pions move in opposite directions after the decay.