A search for Bₛ₀* and B*ₛ₁ through the K⁻p interaction

Studying heavy-quark hadrons is crucial due to the nonperturbative nature of low-energy QCD, with Heavy-Quark Symmetry (HQS) serving as a key framework for understanding their spin and flavor symmetries. However, a key issue is that the theoretically expected B(*)K̄ B ( ∗ ) K ¯ molecular states have not yet been observed, although they are considered the bottom-quark counterparts of the observed D̄(*)K̄ D ¯ ( ∗ ) K ¯ molecular states (corresponding to Dₛ₀(2317/2460)⁻ D s 0 ( 2317 / 2460 ) - ), which challenges the universality of HQS. The main goal of this work is to search for the theoretically predicted BK̄ B K ¯ and B*K̄ B ∗ K ¯ molecular states, namely Bₛ₀*(5725) B s 0 ∗ ( 5725 ) and Bₛ₁*(5778) B s 1 ∗ ( 5778 ) , via the reactions K⁻p → b⁰ Bₛ₀* K - p → Λ b