Assertion: dark photon | /r/HasProperty | studied in extensive mass range
Facets:
value: well
type: DEGREE
Source sentences:
text: While the dark photon (which couples to the electric charges) and the U(1)B-L gauge boson have been well studied in an extensive mass range, the U(1)L gauge boson has not been fully investigated yet.
text: While the dark photon (which couples to the electric charges) and the U(1)B−L gauge boson have been well studied in an extensive mass range, the U(1)L gauge boson has not been fully investigated yet.