Investigating Zcs(3985) and Zcs(4000) exotic states in Λb→Zcs-p decays

We study the Z(cs)(3985) and Z(cs)(4000) exotic states in the decays of Lambda(b) baryons through a molecular scenario. In the final state interaction, the Lambda(b)->Lambda(c)+D-s(()*()-) decays are followed by the Lambda D-+(c)s(()*()-) to Z(cs)(-)p rescatterings via exchange of a D-(*()) meson. We predict a branching fraction of (3.1(-2.6)(+1.4))x10(-4) for Lambda(b)-> Z(cs)(-)p, which can be measured in the Lambda(b)-> J/psi K-(*()-) decay. This study proposes a new approach to test the molecular model, and guides future experimental searches for the Z(cs)(3985) and Z(cs)(4000).