Amplitude analysis and branching-fraction measurement of Ds+ ? ? + ? 0 ??
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Dosyalar
Tarih
2022-04
Yazarlar
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Yayıncı
Springer Science and Business Media Deutschland GmbH
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Abstract: Using data collected with the BESIII detector in e+e? collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32 fb?1 of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the Ds+? ?+?0?? decay. We find that the dominant intermediate process is Ds+? ?+?? and the significances of other resonant and nonresonant processes are all less than 3?. The upper limits on the branching fractions of S-wave and P-wave nonresonant components are set to 0.10% and 0.74% at the 90% confidence level, respectively. In addition, the branching fraction of the Ds+? ?+?0?? decay is measured to be (6.15 ± 0.25(stat.) ± 0.18(syst.))%, which receives significant contribution only from Ds+? ?+?? according to the amplitude analysis. [Figure not available: see fulltext.]. © 2022, The Author(s).
Açıklama
Anahtar Kelimeler
Branching fraction, Charm Physics, e+-e? Experiments, Particle and Resonance Production
Kaynak
Journal of High Energy Physics
WoS Q Değeri
Q2
