Assertion: neutrino's lepton number | /r/HasProperty | broken
Facets:
value: due to that
type: CAUSE
value: spontaneously
type: MANNER
Source sentences:
text: This model has been the subject of several recent studies [42–44] and it has the peculiarity that the lepton number is spontaneously broken due to the fact that .
text: To provide the Majorana masses for the neutrinos, the lepton number must be broken.