Strong decays of $N^{\ast }(1535)$ in an extended chiral quark model

Abstract

The strong decays of the $N^{\ast }(1535)$ resonance are investigated in an extended chiral quark model by including the low-lying $qqqq\bar{q}$ components in addition to the $qqq$ component. The results show that these five-quark components in $N^{\ast }(1535)$ contribute significantly to the $N^{\ast }(1535)\to N\pi$ and $N^{\ast }(1535)\to N\eta$ decays. The contributions to the $N\eta$ decay come from both the lowest energy and the next-to-lowest energy five-quarks components, while the contributions to the $N\pi$ decay come from only the latter one. Taking these contributions into account, the description for the strong decays of $N^{\ast }(1535)$ is improved, especially, for the puzzling large ratio of the decays to $N\eta$ and $N\pi$.

6 pages, 1 figure

References in corpus (7)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The role of $N^{\ast }(1535)$ in $pp\to pp\varphi$ and ${\pi }^{-}p\to n\varphi$ reactions
• Strangeness spin, magnetic moment and strangeness configurations of the proton
• The role of the $qqqq\bar{q}$ components in the electromagnetic transition ${\gamma }^{\ast }N\to N^{\ast }(1535)$
• The role of $q\bar{q}$ components in the N(1440) resonance
• Reply to Comment on "Mass and K-Lambda Coupling of the N*(1535)"
• Five-quark components in $\Delta (1232)\to N\pi$ decay

Cited by in corpus (9)

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• A Three-Flavor Chiral Effective Model with Four Baryonic Multiplets within the Mirror Assignment
• Spectroscopy of light $N^{\ast }$ baryons
• Influence of the axial anomaly on the decay $N(1535)\to N\eta$
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• Prospects for detecting the hidden-strange pentaquarklike state $N^{\ast }(2080)$ in the ${\pi }^{-}p\to \varphi n$ reaction
• The ${\Omega }_{cc}$ resonances with negative parity in the chiral constituent quark model
• Partial wave analyses of $\psi (3686)\to p\bar{p}{\pi }^0$ and $\psi (3686)\to p\bar{p}\eta$
• The quark orbital angular momentum of ground state octet baryons