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.

arXiv commentversion to appear in PRC; certain features of the approach clarified

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Cited by in corpus (21)

• Baryon spectroscopy
• Dynamically generated $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances in the hidden charm sector around 4.3 GeV
• Prediction of super-heavy $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden beauty
• Couplings in coupled channels versus wave functions in the case of resonances: application to the two $\Lambda (1405)$ states
• Five-quark components in baryons
• Hadron spectroscopy from strangeness to charm and beauty
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Associated strangeness production in the pp to pK^+K^-p and pp to pK^+ pi^0 Sigma^0 reactions
• Role of the $N^{\ast }(1535)$ in the ${\Lambda }_c^{+}\to {\bar{K}}^0\eta p$ decay
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• Coupling strength of the $N^{\ast }(1535)S_{11}$ to the $K^{+}\Lambda$ channel
• Nucleon resonances in the $\gamma p\to \varphi K^{+}\Lambda$ reaction near threshold
• Production of $N^{\ast }(1535)$ and $N^{\ast }(1650)$ in ${\Lambda }_c\to {\bar{K}}^0\eta p$ $(\pi N)$ decay
• Complementary studies on $N^{\ast }$ from $e^{+}{e}^{-}$, $pp$ and $p\bar{p}$ collisions
• Nucleon resonances in the ${\pi }^{-}p\to K^0\Lambda$ reaction near threshold
• Combined analysis of the ${\pi }^{-}p\to K^0\Lambda$, $\eta n$ reactions in a chiral quark model
• 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
• Penta-quark states with hidden charm and beauty
• Penta-quark States with Strangeness, Hidden Charm and Beauty