Low-mass dark sector searches with deuteron photodisintegration
Low-mass dark sector searches with deuteron photodisintegration
Recent years have seen much activity in searches for dark-sector messenger particles in the 10–100 MeV mass range, especially in view of a potential new light boson conjectured by the ATOMKI Collaboration, X17. Under the assumption that the messenger particle has definite parity and either zero or unit spin, quite …