A search for $B_{s0}^{\ast }$ and $B_{s1}^{\ast }$ through the $K^{-}p$ interaction

Abstract

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 $B^{(\ast )}\bar{K}$ molecular states have not yet been observed, although they are considered the bottom-quark counterparts of the observed ${\bar{D}}^{(\ast )}\bar{K}$ molecular states (corresponding to $D_{s0}(2317/2460{)}^{-}$), which challenges the universality of HQS. The main goal of this work is to search for the theoretically predicted $B\bar{K}$ and $B^{\ast }\bar{K}$ molecular states, namely $B_{s0}^{\ast }(5725)$ and $B_{s1}^{\ast }(5778)$, via the reactions $K^{-}p\to {\Lambda }_b^0{B}_{s0}^{\ast }$ and $K^{-}p\to {\Lambda }_b^0{B}_{s1}^{\ast }$. Within an effective Lagrangian framework, we compute the relevant cross sections, considering $t$-channel $B^{(\ast )}$ exchanges and $K^{-}p$ initial-state interactions (ISI). The results show that the production cross sections of $B_{s0}^{\ast }(5725)$ and $B_{s1}^{\ast }(5778)$ can reach the order of 0.01~nb, and we suggest that experiments searching for $B_{s0}^{\ast }(5725)$ are best performed at $P_{K^{-}}=12.18\mathrm{GeV}$, while higher energies are most favorable for producing $B_{s1}^{\ast }(5778)$. The ISI play a crucial role, as they not only significantly enhance the production cross sections of $B_{s0}^{\ast }(5725)$ and $B_{s1}^{\ast }(5778)$ (by roughly one order of magnitude) but also markedly affect the angular distributions of the produced particles. We also calculated the production cross sections of the conventional quark-antiquark states $B_{s0}^{\ast }(5700)$ and $B_{s1}^{\ast }(5720)$, which are found to be nearly the same as those of $B_{s0}^{\ast }(5725)$ and $B_{s1}^{\ast }(5778)$. Although their internal structures remain ambiguous, these results can inform future experimental searches at CERN and J-PARC.

9 pages, 9 figures, 2 table

References in corpus (31)

• Chiral Multiplets of Heavy-Light Mesons
• Dynamically Generated Open and Hidden Charm Meson Systems
• Dynamically generated 0^+ heavy mesons in a heavy chiral unitary approach
• Identifying exotic hidden-charm pentaquarks
• Consequences of Heavy Quark Symmetries for Hadronic Molecules
• Towards exotic hidden-charm pentaquarks in QCD
• Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture
• $D_{s0}^{\ast }(2317)$ Meson and $D$-Meson-Kaon Scattering from Lattice QCD
• Dynamically generated 1^+ heavy mesons
• Chiral Lagrangians for Radiative Decays of Heavy Hadrons
• Study of $P_c(4457)$, $P_c(4440)$, and $P_c(4312)$ in a quasipotential Bethe-Salpeter equation approach
• Heavy quark spin symmetric molecular states from ${\bar{D}}^{(\ast )}{\Sigma }_c^{(\ast )}$ and other coupled channels in the light of the recent LHCb pentaquarks
• Interpretation of the LHCb $P_c$ States as Hadronic Molecules and Hints of a Narrow $P_c(4380)$
• Possible interpretations of the $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Exploring the molecular scenario of $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Isospin breaking decays as a diagnosis of the hadronic molecular structure of the $P_c(4457)$
• Scattering lengths of Nambu-Goldstone bosons off $D$ mesons and dynamically generated heavy-light mesons
• Possible pentaquarks with heavy quarks
• Radiative decay of Lambdac(2940)+ in a hadronic molecule picture
• The structure of pentaquarks $P_c^{+}$ in the chiral quark model
• Molecular structure of the Bs0*(5725) and Bs1(5778) bottom-strange mesons
• $Z_b/Z_b^{\prime }\to {\rm Y}\pi$ and $h_b\pi$ decays in intermediate meson loops model
• Role of the ${\Lambda }_c^{+}(2940)$ in the ${\pi }^{-}p\to D^{-}{D}^{0}p$ reaction close to threshold
• Role of the hadron molecule Lambda_c(2940) in the p bar(p) -> p D0 bar(Lambda)_c(2286) annihilation reaction
• Production of charmed baryon ${\Lambda }_c(2940{)}^{+}$ at PANDA
• Photoproduction of $\Lambda (1405)$ with the $N^{\ast }$ and $t$-channel Regge contributions
• Structure of the $(0^{+},1^{+})$ mesons $B_{s0}$ and $B_{s1}$, and the strong coupling constants $g_{B_{s0}BK}$ and $g_{B_{s1}{B}^{\ast }K}$
• Hunting for the X_b via Radiative Decays
• $pp\to pp{K}^{+}{K}^{-}$ reaction at high energies
• 0^+ and 1^+ States of B and B_s Mesons
• Production of the $D_{s0}(2317)$ and $D_{s1}(2460)$ by kaon-induced reactions on a proton target