Using (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay psi(3686) Lambda(+)(c)(Sigma) over bar (-) +c.c. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of psi(3686)-> Lambda(+)(c)(Sigma) over bar (-) +c.c. is set as 1.4 x 10(-5) at the 90% confidence level.
Search for the weak decay *
H. S. Chen;F. De Mori;G. Felici;Y. Jiang;C. Li;C. Li;C. H. Li;G. Li;A. Mangoni;S. Pacetti
;S. Spataro;G. Wilkinson;Y. Zhang;J. Zhu;
2023
Abstract
Using (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay psi(3686) Lambda(+)(c)(Sigma) over bar (-) +c.c. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of psi(3686)-> Lambda(+)(c)(Sigma) over bar (-) +c.c. is set as 1.4 x 10(-5) at the 90% confidence level.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.