Assertion: muon's mass | /r/HasProperty | constrained
Facets:
value: strongly
type: DEGREE
Source sentences:
text: Moreover neutrino masses, which arise at two loops, display a very particular structure and are strongly constrained, in fact, $\sin^{2}\theta_{13}\gtrsim0.008$, when $\mu\rightarrow eee$ is required to lie below its present experimental limit.