TY - JOUR
T1 - Observation of e + e − → ηψ(2S) at center-of-mass energies from 4.236 to 4.600 GeV
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Kalantar-Nayestanaki, N.
AU - Kappert, R.
AU - Kavatsyuk, M.
AU - Messchendorp, Johan
AU - Rodin, V.
N1 - Publisher Copyright:
© 2021, The Author(s).
PY - 2021/10
Y1 - 2021/10
N2 - 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.]
AB - 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.]
KW - e-e Experiments
KW - Exotics
KW - Particle and resonance production
KW - Quarkonium
UR - http://www.scopus.com/inward/record.url?scp=85118156244&partnerID=8YFLogxK
U2 - 10.1007/JHEP10(2021)177
DO - 10.1007/JHEP10(2021)177
M3 - Article
SN - 1126-6708
VL - 2021
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 10
M1 - 177
ER -