Search for the isospin-violating decays XCJ → Λ(Formula presented) 0 + c.c. and nc Λ(Formula presented) 0 + c.c


Ablikim M., Achasov M., Adlarson P., Ai X., Akondi C., 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: 10.1103/513w-6wjl
  • 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 a sample of (2712.4 ± 14.3) × 106 ψ(3686) events collected with the BESIII detector, we perform a search for the isospin-violating decays (Formula presented)(J = 0; 1; 2) and (Formula presented). No significant signal for xcJ or nc is observed in the (Formula presented) invariant mass distribution. The upper limits on the branching fractions at the 90% confidence level are set to be (Formula presented), and (Formula presented) < 6.2 X 10-5 for the first time.