Measurement of the cross sections of e+e- → K-(Ξ)over-bar+ Λ/Σ0 at center-of-mass energies between 3.510 and 4.914 GeV

Using e(+)e(-) collision data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 3.510 and 4.914 GeV, corresponding to an integrated luminosity of 25 fb(-1), we measure the Born cross sections for the process e(+)e(-)-> K-(Xi) over bar (+)Lambda/Sigma(0) at thirty-five energy points with a partial-reconstruction strategy. By fitting the dressed cross sections of e(+)e(-)-> K-(Xi) over bar (+)Lambda/Sigma(0), evidence for psi(4160)-> K-(Xi) over bar (+)Lambda is found for the first time with a significance of 4.4 sigma, including systematic uncertainties. No evidence for other possible resonances is found. In addition, the products of electronic partial width and branching fraction for all assumed resonances decaying into K-(Xi) over bar (+)Lambda/Sigma(0) are determined.

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Measurement of the cross sections of <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → <i>K</i><SUP>-</SUP>(Ξ)over-bar<SUP>+</SUP> Λ/Σ<SUP>0</SUP> at center-of-mass energies between 3<i>.</i>510 and 4<i>.</i>914 GeV

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Partial wave analysis of $ \psi (3686)\to \Lambda {\overline{\Sigma}}^0{\pi}^0 $ + c.c