Cross section measurement of e+e− → π0π0ψð3686Þ from (Formula presented) =4.008 GeV to 4.951 GeV


Ablikim M., Ablikim M., Achasov M., Adlarson P., Ai X., Aliberti R., ...Daha Fazla

Physical Review D, cilt.113, sa.11, 2026 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 113 Sayı: 11
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1103/98g1-t98b
  • Dergi Adı: Physical Review D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, INSPEC, MathSciNet, zbMATH
  • Boğaziçi Üniversitesi Adresli: Hayır

Özet

Using data samples with a total integrated luminosity of 22.1 fb−1 at center-of-mass energies between 4.008 and 4.951 GeV collected with the BESIII detector, the cross sections of eþe− → π0π0ψð3686Þ process are measured. The obtained cross sections are found to be approximately one-half of those of eþe− → πþπ−ψð3686Þ, consistent with the isospin symmetry expectation. A coherent fit to the dressed cross sections is performed, with the Yð4230Þ parameters fixed at the values measured in eþe− → πþπ−ψð3686Þ. The significances of the Yð4390Þ and Yð4660Þ are both larger than 5σ, and their masses and widths are consistent with the previous measurement in the eþe− → πþπ−ψð3686Þ process.