Role of the $N^{\ast }$(1535) in the $J/\psi \to \bar{p}\eta p$ and $J/\psi \to \bar{p}{K}^{+}\Lambda$ reactions

Abstract

We study the $J/\psi \to \bar{p}\eta p$ and $J/\psi \to \bar{p}{K}^{+}\Lambda$ reactions with a unitary chiral approach. We find that the unitary chiral approach, which generates the $N^{\ast }(1535)$ dynamically, can describe the data reasonably well, particularly the ratio of the integrated cross sections. This study provides further support for the unitary chiral description of the $N^{\ast }(1535)$. We also discuss some subtle differences between the coupling constants determined from the unitary chiral approach and those determined from phenomenological studies.

version to appear in PRC; certain features of the approach clarified

References in corpus (6)

• K^- p scattering length from scattering experiments
• Origin of resonances in the chiral unitary approach
• A gauge invariant chiral unitary framework for kaon photo- and electroproduction on the proton
• Transition form factors of the N*(1535) as a dynamically generated resonance
• The role of the N*(1535) resonance and the pi^- p --> KY amplitudes in the OZI forbidden pi N --> phi N reaction
• Reply to Comment on "Mass and K-Lambda Coupling of the N*(1535)"

Cited by in corpus (5)

• Couplings in coupled channels versus wave functions in the case of resonances: application to the two $\Lambda (1405)$ states
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• The dynamically generated $N(1535)$ state in the ${\Lambda }_c^{+}\to p{\bar{K}}^0{\pi }^0$ decay
• Probing the isospin structure and low-lying resonances in ${\Lambda }_c^{+}\to n{\bar{K}}^0{\pi }^{+}$ decays