Research output: Contribution to journal › Article › peer-review
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. / BESIII Collaboration ; Николаев, Иван Борисович; Мучной, Николай Юрьевич.
In: Physical Review Letters, Vol. 129, No. 18, 28.10.2022, p. 182001.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - 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
AU - BESIII Collaboration
AU - Achasov, M N
AU - Pan, Y
AU - Николаев, Иван Борисович
AU - Мучной, Николай Юрьевич
N1 - Observation of an a0 -like State with Mass of 1.817 GeV in the Study of Ds+→KS0K+π0 Decays / BESIII Collaboration // Physical Review Letters. – 2022. – Vol. 129, No. 18. – P. 182001. – DOI 10.1103/physrevlett.129.182001.
PY - 2022/10/28
Y1 - 2022/10/28
N2 - 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^{+}π^{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^{+}π^{0})=(1.46±0.06_{stat}±0.05_{syst})%.
AB - 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^{+}π^{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^{+}π^{0})=(1.46±0.06_{stat}±0.05_{syst})%.
UR - https://pubmed.ncbi.nlm.nih.gov/36374689/
UR - https://www.elibrary.ru/item.asp?id=57288329
U2 - 10.1103/PhysRevLett.129.182001
DO - 10.1103/PhysRevLett.129.182001
M3 - Article
C2 - 36374689
VL - 129
SP - 182001
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 18
ER -
ID: 68334688