Production of PψsΛ(4338) from Ξb decay

Abstract

In the present work, we investigate the production of the newly observed PψsΛ(4338) state in Ξb− decay, where the PψsΛ(4338) is assigned as a ΞcD¯ molecular state. By using an effective Lagrangian approach, we evaluate the branching fractions of Ξb−→PψsΛ(4338)K− via the triangle loop mechanism. The branching fractions of Ξb−→PψsΛ(4338)K− are in the order of 10−4; the result is compared with our previous work of Ξb−→PψsΛ(4459)K−. We also predict the ratio of PψsΛ(4459) and PψsΛ(4338) productions in the decay Ξb−→PψsΛK−→J/ψΛK−. The predicted branching fractions and their ratios could be tested experimentally, which may be helpful for understanding the molecular picture of PψsΛ(4338) as well as other hidden-charm pentaquark states with strangeness. Moreover, the experimental potential of observing PψsΛ(4338) in the Ξb−→K−J/ψΛ is discussed. Published by the American Physical Society 2024