• Open Access

Study of e+eϒ(1S,2S)η and e+eϒ(1S)η at s=10.866GeV with the Belle detector

E. Kovalenko et al. (Belle Collaboration)
Phys. Rev. D 104, 112006 – Published 15 December 2021

Abstract

We report the first observation of the processes e+eϒ(1S,2S)η at s=10.866GeV, with significance exceeding 10σ for both processes. The measured Born cross sections are σ(e+eϒ(2S)η)=2.07±0.21±0.19pb, and σ(e+eϒ(1S)η)=0.42±0.08±0.04pb. We also set the upper limit on the cross section of the process e+eϒ(1S)η to be σ(e+eϒ(1S)η)<0.037pb at 90% C.L. The results are obtained with the data sample collected with the Belle detector at the KEKB asymmetric-energy e+e collider in the energy range from 10.63 to 11.02 GeV.

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  • Received 11 August 2021
  • Accepted 12 November 2021

DOI:https://doi.org/10.1103/PhysRevD.104.112006

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

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  1. Physical Systems
Particles & Fields

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Vol. 104, Iss. 11 — 1 December 2021

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