Production of open-charm pentaquark molecules in decay B^0 →D̅^0 p p̅

This study explores the production of open-charm pentaquark molecular states, specifically ND̅^* and N̅D̅^*, within the B^0 →D̅^0 p p̅ decay process. We analyze the invariant mass spectrum of pD̅^0 and p̅D̅^0, incorporating the rescattering process calculated using a quasipotential Bethe-Salpeter equation approach. Our findings suggest the potential identification of the isoscalar N̅D̅^* molecule with 3/2^+, serving as the antiparticle partner of the Λ_c(2940), in the p̅D̅^0 mass distribution. Additionally, distinctive signals of the isovector ND̅^* molecule with 1/2^- may emerge in the pD̅^0 invariant mass distribution. We highlight the significance of the three-body decay of the bottom meson as a valuable avenue for studying open-charm molecules and advocate for increased attention and more precise experimental measurements of the B^0 →D̅^0 p p̅ process.