TY - JOUR
T1 - Investigation of the Δi=1/2 Rule and Test of CP Symmetry through the Measurement of Decay Asymmetry Parameters in Ξ- Decays
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ai, X. C.
AU - Aliberti, R.
AU - Kalantar-Nayestanaki, N.
AU - Kavatsyuk, M.
AU - Kappert, R.
AU - Messchendorp, J.
PY - 2024/3/8
Y1 - 2024/3/8
N2 - Using (10087±44)×106 J/ψ events collected with the BESIII detector, numerous Ξ- and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ-Ξ¯+→Λ(pπ-)π-Λ¯(n¯π0)π+ and its charge-conjugate channel. The precisions of αΛ0 for Λ→nπ0 and α¯Λ0 for Λ¯→n¯π0 compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decay asymmetry parameters of Λ→nπ0 to that of Λ→pπ-, ⟨αΛ0 ©/⟨αΛ-
AB - Using (10087±44)×106 J/ψ events collected with the BESIII detector, numerous Ξ- and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→Ξ-Ξ¯+→Λ(pπ-)π-Λ¯(n¯π0)π+ and its charge-conjugate channel. The precisions of αΛ0 for Λ→nπ0 and α¯Λ0 for Λ¯→n¯π0 compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decay asymmetry parameters of Λ→nπ0 to that of Λ→pπ-, ⟨αΛ0 ©/⟨αΛ-
U2 - 10.1103/PhysRevLett.132.101801
DO - 10.1103/PhysRevLett.132.101801
M3 - Article
SN - 0031-9007
VL - 132
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
M1 - 101801
ER -