Understanding the Nature of $\Lambda (1405)$ through Regge Physics

Abstract

It appears that there are two resonances with $J^P=1/2^{-}$ quantum numbers in the energy region near the $\Lambda (1405)$ hyperon. The nature of these states is a topic of current debate. To provide further insight we use Regge phenomenology to access how these two resonances fit the established hyperon spectrum. We find that only one of these resonances is compatible with a three-quark state.

References in corpus (11)

• Effective Kbar N interaction based on chiral SU(3) dynamics
• Lattice QCD Evidence that the Lambda(1405) Resonance is an Antikaon-Nucleon Molecule
• Constraints on the chiral unitary $\bar{K}N$ amplitude from $\pi \Sigma K^{+}$ photoproduction data
• Excited hadrons on the lattice: Baryons
• Strange baryon spectroscopy in the relativistic quark model
• Quark-Model Identification of Baryon Ground and Resonant States
• Predictions for the ${\Lambda }_b\to J/\psi \Lambda (1405)$ decay
• Coupled-Channel Model for $\bar{K}N$ Scattering in the Resonant Region
• On the nature of the $\Lambda (1405)$ and $\Lambda (1670)$ from their $N_c$ behavior in chiral dynamics
• Role of five-quark components in radiative and strong decays of the Lambda(1405) resonance
• Dispersive calculation of complex Regge trajectories for the lightest $f_2$ resonances

Cited by in corpus (13)

• Novel approaches in Hadron Spectroscopy
• Hidden charm pentaquarks: mass spectrum, magnetic moments, and photocouplings
• The pole structure of the Lambda(1405) in a recent QCD simulation
• Concavity of the meson Regge trajectories
• S- and p-wave structure of $S=-1$ meson-baryon scattering in the resonance region
• New insights into the pole parameters of the $\Lambda (1380)$, the $\Lambda (1405)$ and the $\Sigma (1385)$
• Charmonium spectrum with a Dirac potential model in the momentum space
• Global analysis of charge exchange meson production at high energies
• $\Lambda$ and $\Sigma$ Excitations and the Quark Model
• Regge phenomenology of the $N^{\ast }$ and ${\Delta }^{\ast }$ poles
• Bottomonium spectrum with a Dirac potential model in the momentum space
• Amplitude analysis of $\bar{K}N$ scattering
• The $\Lambda (1405)$ resonance as a genuine three-quark or molecular state