Search for a massless dark photon in Lambda(+)(c) -> p gamma' decay

Çetin, Serkant Ali2022-12-192022-12-192022-12-172470-00292470-0010https://hdl.handle.net/11411/4854https://doi.org/10.1103/PhysRevD.106.072008Abstract: A search for a massless dark photon gamma' 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, and the upper limit on the branching fraction B(Lambda(+)(c) -> p gamma') is determined to be 8.0 x 10(-5) at 90% confidence level.eninfo:eu-repo/semantics/openAccessSearch for a massless dark photon in Lambda(+)(c) -> p gamma' decayArticle10.1103/PhysRevD.106.072008N/A