Role of the $N^{\ast }(1535)$ in the ${\Lambda }_c^{+}\to {\bar{K}}^0\eta p$ decay

Abstract

The nonleptonic weak decay of ${\Lambda }_c^{+}\to {\bar{K}}^0\eta p$ is analyzed from the viewpoint of probing the $N^{\ast }(1535)$ resonance, which has a big decay branching ratio to $\eta N$. Up to an arbitrary normalization, the invariant mass distribution of $\eta p$ is calculated with both the chiral unitary approach and an effective Lagrangian model. Within the chiral unitary approach, the $N^{\ast }(1535)$ resonance is dynamically generated from the final state interaction of mesons and baryons in the strangeness zero sector. For the effective Lagrangian model, we take a Breit-Wigner formula to describe the distribution of the $N^{\ast }(1535)$ resonance. It is found that the behavior of the $N^{\ast }(1535)$ resonance in the ${\Lambda }_c^{+}\to {\bar{K}}^0{N}^{\ast }(1535)\to {\bar{K}}^0\eta p$ decay within the two approaches is different. The proposed ${\Lambda }_c^{+}$ decay mechanism can provide valuable information on the properties of the $N^{\ast }(1535)$ and can in principle be tested by facilities such as BEPC II and SuperKEKB.

8 pages and 7 figures

References in corpus (23)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Extended Partial-Wave Analysis of piN Scattering Data
• The Experimental Status of Glueballs
• Origin of resonances in the chiral unitary approach
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Chiral dynamics of the S11(1535) and S11(1650) resonances revisited
• Eta photoproduction in a combined analysis of pion- and photon-induced reactions
• The low lying scalar resonances in the $D^0$ decays into $K_s^0$ and $f_0(500)$, $f_0(980)$, $a_0(980)$
• The role of $N^{\ast }(1535)$ in $pp\to pp\varphi$ and ${\pi }^{-}p\to n\varphi$ reactions
• Predictions for the ${\Lambda }_b\to J/\psi \Lambda (1405)$ decay
• Quasifree photoproduction of $\eta$ mesons off protons and neutrons
• Transition form factors of the N*(1535) as a dynamically generated resonance
• Study of $\eta$ and ${\eta }^{\prime }$ photoproduction at MAMI
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• The role of the $qqqq\bar{q}$ components in the electromagnetic transition ${\gamma }^{\ast }N\to N^{\ast }(1535)$
• On the nature of the lowest $1/2^{-}$ baryon nonet and decuplet
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• ${\Sigma }_{1/2^{-}}^{\ast }(1380)$ in the ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$ decay
• Mixing of pseudoscalar-baryon and vector-baryon in the $J^P=1/2^{-}$ sector and the $N^{\ast }$(1535) and $N^{\ast }$(1650) resonances
• The role of $N^{\ast }(1535)$ in ${\eta }^{\prime }$ production
• The role of the N*(1535) resonance and the pi^- p --> KY amplitudes in the OZI forbidden pi N --> phi N reaction
• Role of the $N^{\ast }$(1535) in the $J/\psi \to \bar{p}\eta p$ and $J/\psi \to \bar{p}{K}^{+}\Lambda$ reactions
• Evidence of N*(1535) resonance contribution in the pn->dϕreaction

Cited by in corpus (12)

• The scalar $f_0(500)$ and $f_0(980)$ resonances and vector mesons in the single Cabibbo-suppressed decays ${\Lambda }_c\to p{K}^{+}{K}^{-}$ and $p{\pi }^{+}{\pi }^{-}$
• Theoretical study of the $\Omega (2012)$ state in the ${\Omega }_c^0\to {\pi }^{+}\Omega (2012{)}^{-}\to {\pi }^{+}(\bar{K}\Xi {)}^{-}$ and ${\pi }^{+}(\bar{K}\Xi \pi {)}^{-}$ decays
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Roles of $a_0(980)$, $\Lambda (1670)$, and $\Sigma (1385)$ in the ${\Lambda }_c^{+}\to \eta \Lambda {\pi }^{+}$ decay
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• Production of $N^{\ast }(1535)$ and $N^{\ast }(1650)$ in ${\Lambda }_c\to {\bar{K}}^0\eta p$ $(\pi N)$ decay
• Roles of the $N(1535)$ and $a_0(980)$ in the process ${\Lambda }_c^{+}\to {\pi }^{+}\eta n$
• Measurement of the absolute branching fraction of ${\Lambda }_c^{+}\to p{K}_{\mathrm{S}}^0\eta$ decays
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• The dynamically generated $N(1535)$ state in the ${\Lambda }_c^{+}\to p{\bar{K}}^0{\pi }^0$ decay
• Role of the low-lying nucleon resonances in the $p\bar{p}\to \psi \eta$ reaction
• Probing the isospin structure and low-lying resonances in ${\Lambda }_c^{+}\to n{\bar{K}}^0{\pi }^{+}$ decays