Observation of D+ ? KS0 a0 (980)+ in the Amplitude Analysis of D+ ? KS0 ?+?
Küçük Resim Yok
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
We perform for the first time an amplitude analysis of the decay D+?KS0?+? and report the observation of the decay D+?KS0a0(980)+ using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a0(980) pseudoscalar, D+?KS0a0(980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a0(980) and to study the final-state interactions. The absolute branching fraction of D+?KS0?+? is measured to be (1.27±0.04stat±0.03syst)%. The branching fractions of intermediate processes D+?KS0a0(980)+ with a0(980)+??+? and D+??+K?0?(1430)0 with K?0?(1430)0?KS0? are measured to be (1.33±0.05stat±0.04syst)% and (0.14±0.03stat±0.01syst)%, respectively. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
Açıklama
Anahtar Kelimeler
Annihilation, A-Center, Absolute Branching Fractions, Amplitude Analysis, Branching Fractions, Center-Of-Mass Energies, Centre-Of-Mass Energies, Final-State İnteractions, Free Decay, Pseudoscalars, Germanium Compounds, Article
Kaynak
Physical Review Letters
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
132
Sayı
13
