Observation of e(+)e(-) -> eta h(c) at center-of-mass energies from 4.085 to 4.600 GeV

Çetin, Serkant Ali2020-12-312020-12-312017-07-10https://hdl.handle.net/11411/3031https://doi.org/10.1103/PhysRevD.96.012001We observe for the first time the process e(+) e(-) -> eta h(c) with data collected by the BESIII experiment. Significant signals are observed at the center-of-mass energy root s = 4.226 GeV, and the Born cross section is measured to be (9.5(-2.0)(+2.2)) pb. Evidence for eta h(c) is observed at root s = 4.358 GeV with a Born cross section of (10.0(-2.7)(+3.1)) pb, and upper limits on the production cross section at other center-of-mass energies between 4.085 and 4.600 GeV are determined.eninfo:eu-repo/semantics/openAccessObservation of e(+)e(-) -> eta h(c) at center-of-mass energies from 4.085 to 4.600 GeVArticle2-s2.0-8502721784610.1103/PhysRevD.96.012001Q1Q1WOS:000405187900003