Observation of e + e → ηψ(2S) at center-of-mass energies from 4.236 to 4.600 GeV

The BESIII Collaboration

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2 Scopus citations

Abstract

Using a total of 5.25 fb−1 of e+e collision data with center-of-mass energies from 4.236 to 4.600 GeV, we report the first observation of the process e+e→ ηψ(2S) with a statistical significance of 4.9 standard deviations. The data sets were collected by the BESIII detector operating at the BEPCII storage ring. We measure the yield of events integrated over center-of-mass energies and also present the energy dependence of the measured cross section. [Figure not available: see fulltext.]

Original languageEnglish (US)
Article number177
JournalJournal of High Energy Physics
Volume2021
Issue number10
DOIs
StatePublished - Oct 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021, The Author(s).

Keywords

  • Exotics
  • Particle and resonance production
  • Quarkonium
  • e-e Experiments

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