Decay properties of $N^{\ast }(1895)$

Abstract

The nature of nucleon resonances is still being debated, while much experimental data are accumulated. In this work, we focus on the negative parity resonance $N^{\ast }(1895)$ which is located in the scattering region of various meson-baryon coupled channels, and such dynamics can be crucial in understanding its properties. To test the relevance of such hadron dynamics, we investigate the decay properties of $N^{\ast }(1895)$ in detail. We examine how a two pole nature of $N^{\ast }(1895)$ is compatible with its observed decay properties. Moreover, we find that the resonance decays into final states involving $\Lambda (1405)$ and $\Sigma (1400)$, where the latter is not yet observed experimentally. Such decay processes can be useful to study the properties of the aforementioned hyperon resonances.

References in corpus (30)

• Chiral dynamics in the presence of bound states: kaon-nucleon interactions revisited
• Non perturbative chiral approach to s-wave \bar{K}N interactions
• Chiral Dynamics of the Two Λ(1405) States
• The nature of the Lambda(1405) resonance in chiral dynamics
• Quasi-Two-Body Decays of Nonstrange Baryons
• Properties of baryon resonances from a multichannel partial wave analysis
• Algebraic models of hadron structure: I. Nonstrange baryons
• Updated analysis of $\pi$N elastic scattering data to 2.1~GeV: The Baryon Spectrum
• Evidence for a missing nucleon resonance in kaon photoproduction
• Meson-baryon reactions with strangeness -1 within a chiral framework
• Constraints on the chiral unitary $\bar{K}N$ amplitude from $\pi \Sigma K^{+}$ photoproduction data
• Differential Photoproduction Cross Sections of the Sigma0(1385), Lambda(1405), and Lambda(1520)
• On the isospin 0 and 1 resonances from $\pi \Sigma$ photoproduction data
• Searching for signatures around 1920 MeV of a $N^{\ast }$ state of three hadron nature
• Evidence for a new ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ in the old data of $K^{-}p\to \Lambda {\pi }^{+}{\pi }^{-}$ reaction
• Further evidence for the ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ around 1380 MeV
• Role of vector and pseudoscalar mesons in understanding $1/2^{-}$ $N^{\ast }$ and $\Delta$ resonances
• Possible $\Sigma ({\frac{1}{2}}^{-})$ under the ${\Sigma }^{\ast }(1385)$ peak in $K{\Sigma }^{\ast }$ photoproduction
• Origin of the second peak in the cross section of the $K^{+}\Lambda$ photoproduction
• ${\Sigma }_{1/2^{-}}^{\ast }(1380)$ in the ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$ decay
• First Observation of the $\Lambda (1405)$ Line Shape in Electroproduction
• Hyperon resonances coupled to pseudoscalar- and vector-baryon channels
• Updated determination of $N^{\ast }$ resonance parameters using a unitary, multichannel formalism
• Photoproduction of $\Lambda (1405)$ with the $N^{\ast }$ and $t$-channel Regge contributions
• Negative parity $\Lambda$ and $\Sigma$ resonances coupled to pseudoscalar and vector mesons
• Role of the possible ${\Sigma }^{\ast }({\frac{1}{2}}^{-})$ state in the $\Lambda p\to \Lambda p{\pi }^0$ reaction
• The exact discontinuity of a partial wave along the left-hand cut and the exact $N/D$ method in non-relativistic scattering
• Coupled $K^{+}\Lambda$ and $K^0\Lambda$ photoproduction off the nucleon: Consequences from the recent CLAS and MAMI data and the $N(1680)P_{11}$ narrow state
• Baryon Spectra in Deformed Oscillator Quark Model
• $K^{+}\Lambda$(1405) photoproduction at the BGO-OD experiment

Cited by in corpus (5)

• Light Baryon Spectroscopy
• Photoproduction of ${\Lambda }^{\ast }$ and ${\Sigma }^{\ast }$ resonances with $J^P=1/2^{-}$ off the proton
• Observation of a structure in the M${}_{p\eta }$ invariant mass distribution near 1700 MeV/$c^2$ in the $\gamma \mathbf{p}\to \mathbf{p}{\pi }^0\eta$ reaction
• Spectral function of the ${\eta }^{\prime }$ meson in nuclear medium based on phenomenological models
• Exotic properties of N^*(1895) and its impact on photoproduction of light hyperons