Using data samples collected with the BESIII detector at the BEPCII collider at six center-of-mass energies between 4.008 and 4.600 GeV, we observe the processes e+e− → φφω and e+e− → φφφ. The Born cross sections are measured and the ratio of the cross sections σ (e+e− → φφω)/σ (e+e− → φφφ) is estimated to be 1.75±0.22±0.19 averaged over six energy points, where the first uncertainty is statistical and the second is systematic. The results represent first measurements of these interactions.
Measurement of cross sections of the interactions e + e − → ϕϕω and e + e − → ϕϕϕ at center-of-mass energies from 4.008 to 4.600 GeV
FARINELLI, Riccardo;GARZIA, Isabella;MEZZADRI, Giulio;
2017
Abstract
Using data samples collected with the BESIII detector at the BEPCII collider at six center-of-mass energies between 4.008 and 4.600 GeV, we observe the processes e+e− → φφω and e+e− → φφφ. The Born cross sections are measured and the ratio of the cross sections σ (e+e− → φφω)/σ (e+e− → φφφ) is estimated to be 1.75±0.22±0.19 averaged over six energy points, where the first uncertainty is statistical and the second is systematic. The results represent first measurements of these interactions.File in questo prodotto:
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