Observation of e(+)e(-) -> eta ' J/psi center-of-mass energies between 4.189 and 4.600 GeV

Çetin, Serkant Ali2020-11-112020-11-112016-08-232470-00292470-0010https://hdl.handle.net/11411/2577https://doi.org/10.1103/PhysRevD.94.032009The process e(+)e(-) -> eta' J/psi is observed for the first time with a statistical significance of 8.6 sigma at center-of-mass energy root s = 4.226 GeV and 7.3 sigma at root s = 4.258 GeV using data samples collected with the BESIII detector. The Born cross sections are measured to be (3.7 +/- 0.7 +/- 0.3) and (3.9 +/- 0.8 +/- 0.3) pb at root s = 4.226 and 4.258 GeV, respectively, where the first errors are statistical and the second systematic. Upper limits at the 90% confidence level of the Born cross sections are also reported at other 12 energy points.eninfo:eu-repo/semantics/openAccessObservation of e(+)e(-) -> eta ' J/psi center-of-mass energies between 4.189 and 4.600 GeVArticle2-s2.0-8498489308710.1103/PhysRevD.94.032009Q1WOS:000381893400002