Browsing by Author "Achasov M.N"

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Search for a massless dark photon in Λc+ →pγ′ decay

Ablikim M.; Achasov M.N; Adlarson P.; Albrecht M.; Aliberti R.; Amoroso A.; Cetin, Ali Serkant; Kolcu, Onur Bugra (American Physical Society, 2022)

A search for a massless dark photon γ′ is conducted using 4.5 fb-1 of e+e- collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. No significant signal is observed, ...