Observation of an a_{0}-like State with Mass of 1.817 GeV in the Study of D_{s}^{+}?K_{S}^{0}K^{+}?^{0} Decays
Yükleniyor...
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Using e^{+}e^{-} annihilation data corresponding to an integrated luminosity of 6.32 fb^{-1} collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay D_{s}^{+}?K_{S}^{0}K^{+}?^{0} and determine the relative branching fractions and phases for intermediate processes. We observe an a_{0}-like state with mass of 1.817 GeV in its decay to K_{S}^{0}K^{+} for the first time. In addition, we measure the ratio {B[D_{s}^{+}?K[over ¯]^{*}(892)^{0}K^{+}]/B[D_{s}^{+}?K[over ¯]^{0}K^{*}(892)^{+}]} to be 2.35_{-0.23stat}^{+0.42}±0.10_{syst}. Finally, we provide a precision measurement of the absolute branching fraction B(D_{s}^{+}?K_{S}^{0}K^{+}?^{0})=(1.46±0.06_{stat}±0.05_{syst})%.
Açıklama
Anahtar Kelimeler
Kaynak
PHYSICAL REVIEW LETTERS
WoS Q Değeri
Scopus Q Değeri
Cilt
129
Sayı
18
Künye
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Observation of an a_{0}-like State with Mass of 1.817 GeV in the Study of D_{s}^{+}→K_{S}^{0}K^{+}π^{0} Decays. Phys Rev Lett. 2022 Oct 28;129(18):182001. doi: 10.1103/PhysRevLett.129.182001. PMID: 36374689.
