The process e+e-→η′J/ψ is observed for the first time with a statistical significance of 8.6σ at center-of-mass energy s=4.226 GeV and 7.3σ at 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 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.
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Titolo: | Observation of e+e- →η′J /ψ at center-of-mass energies between 4.189 and 4.600 GeV OBSERVATION of ... M. ABLIKIM et al |
Autori: | |
Data di pubblicazione: | 2016 |
Rivista: | |
Abstract: | The process e+e-→η′J/ψ is observed for the first time with a statistical significance of 8.6σ at ...center-of-mass energy s=4.226 GeV and 7.3σ at 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 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. |
Handle: | http://hdl.handle.net/11391/1462572 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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