Amplitude analysis of singly Cabibbo-suppressed decay (Formula presented)


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

Physical Review D, cilt.114, sa.3, 2026 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 114 Sayı: 3
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1103/kmgx-cxbw
  • 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 e+e- annihilation data corresponding to an integrated luminosity of 4.4 fb-1 collected with the BESIII detector at the BEPCII collider and produced at center-of-mass energies from 4600 to 4698 MeV, an amplitude analysis is performed of the singly Cabibbo-suppressed decay (Formula presented) →pK+K-. The branching fractions of (Formula presented) →рфд(020) pfo(980), Λ(1405)K+, and Λ(1670)K+ are measured, where the latter two modes are decays that are observed for the first time. At the same time, with the detection efficiency based on the results of the amplitude analysis, the branching fraction of (Formula presented) →pK+K-is updated to be (9.94 ± 0.65stat ± 0.50syst) × 10-4, which is consistent with the current world average value within one standard deviation. The result supersedes the previous BESIII measurement with precision improved by approximately a factor of 1.5.