Using a sample of 1.06 x 10^8 psi(3686) events collected with the BESIII detector, we present the first observation of the decays of psi(3686) -> LambdaSigmabar+pi- + c.c. and psi(3686) -> LambdaSigmabar-pi+ + c.c. The branching fractions are measured to be B(psi(3686) -> LambdaSigmabar+pi- + c.c.) = (1.40 +- 0.03 +- 0.13) x 10^-4 and B(psi(3686) -> LambdaSigmabar-pi+ + c.c.) = (1.54 +- 0.04 +- 0.13) x 10^-4, where the first errors are statistical and the second ones systematic.
Observation of the decay ψ(3686) → ΛΣbar±π∓ + c.c.
DESTEFANIS, MARCO GIOVANNI;GRECO, Michela;MAGGIORA, MARCO;SPATARO, STEFANO GIOVANNI;
2013-01-01
Abstract
Using a sample of 1.06 x 10^8 psi(3686) events collected with the BESIII detector, we present the first observation of the decays of psi(3686) -> LambdaSigmabar+pi- + c.c. and psi(3686) -> LambdaSigmabar-pi+ + c.c. The branching fractions are measured to be B(psi(3686) -> LambdaSigmabar+pi- + c.c.) = (1.40 +- 0.03 +- 0.13) x 10^-4 and B(psi(3686) -> LambdaSigmabar-pi+ + c.c.) = (1.54 +- 0.04 +- 0.13) x 10^-4, where the first errors are statistical and the second ones systematic.
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