2021
DOI: 10.1007/jhep11(2021)217
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Observation of the decays χcJ → $$ {\mathrm{nK}}_{\mathrm{S}}^0\overline{\Lambda} $$ + c.c.

Abstract: By analyzing 4.48 × 108ψ(3686) events collected with the BESIII detector, we observe the decays χcJ → $$ {nK}_S^0\overline{\Lambda} $$ nK S 0 Λ ¯ + c.c. (J = 0, 1, 2) for the first time, via the radiative transition ψ(3686) → γχcJ. The branching fractions are determined to be (6.65 ± 0.26stat ± 0.41syst) × 10−4, (1.66 ± … Show more

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