Payne was a scientist at the Daystrom Institute. This individual worked with Miller on stardate 41039. Their search for spontaneous transformation under a set condition resulted in a finding that "tachyon propagation can be described by hybrid-classical interpretations of sub-quantum mechanics."
This individual's name was mentioned in journals read by Lieutenant Commander Data as he was searching for clues on how to detect cloaked Romulan warbirds during the Klingon Civil War in 2368. (TNG-R: "Redemption II")