On the Strangeness -1 S-wave Meson-Baryon Scattering

Abstract

We consider meson-baryon interactions in S-wave with strangeness -1. This is a non-perturbative sector populated by plenty of resonances interacting in several two-body coupled channels.We study this sector combining a large set of experimental data. The recent experiments are remarkably accurate demanding a sound theoretical description to account for all the data. We employ unitary chiral perturbation theory up to and including \cal{O}(p^2) to accomplish this aim. The spectroscopy of our solutions is studied within this approach, discussing the rise from the pole content of the two Λ(1405) resonances and of the Λ(1670), Λ(1800), Σ(1480), Σ(1620) and Σ(1750). We finally argue about our preferred solution.

35 pages, 7 figures, 12 tables

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• Quark mass dependence of s-wave baryon resonances
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• Evidence for the two pole structure of the Lambda(1405) resonance
• Spectrum and decays of kaonic hydrogen
• SU(3) Baryon Chiral Perturbation Theory and Long Distance Regularization
• Chiral unitary meson-baryon dynamics in the presence of resonances: Elastic pion-nucleon scattering
• Baryon magnetic moments in chiral perturbation theory
• Surprises in threshold antikaon-nucleon physics
• Kaonic hydrogen and K^- p scattering
• Kaon Condensation in Proto-Neutron Star Matter
• Chiral Corrections to the S-Wave Pion-Nucleon Scattering Lengths
• Negative Parity 70-plet Baryon Masses in the 1/Nc Expansion
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• Evidence for an Excited Hyperon State in pp -> p K^+ Y^{0*}
• Baryon Masses at Second Order in Chiral Perturbation Theory
• The S-wave Λπphase shift is not large
• Measurement of Decay Parameters for ${\Xi }^{-}\to \Lambda {\pi }^{-}$ Decay
• Chiral QCD: Baryon dynamics
• Can the Lambda pi scattering phase shifts be large?
• Non-localities and Fermi motion corrections in $K^{-}$ atoms

Cited by in corpus (108)

• Baryon spectroscopy
• A New Measurement of Kaonic Hydrogen X rays
• The nature of the Lambda(1405) resonance in chiral dynamics
• Threshold cusps and triangle singularities in hadronic reactions
• Chiral SU(3) theory of antikaon-nucleon interactions with improved threshold constraints
• Effective Kbar N interaction based on chiral SU(3) dynamics
• Moving Multi-Channel Systems in a Finite Volume with Application to Proton-Proton Fusion
• Strangeness in Nuclei and Neutron Stars
• K^- p scattering length from scattering experiments
• A method to measure the antikaon-nucleon scattering length in lattice QCD
• $\bar{K}NN$ quasi-bound state and the $\bar{K}N$ interaction: coupled-channel Faddeev calculations of the $\bar{K}NN-\pi \Sigma N$ system
• Origin of resonances in the chiral unitary approach
• Meson-baryon reactions with strangeness -1 within a chiral framework
• Improved constraints on chiral SU(3) dynamics from kaonic hydrogen
• Constraints on the chiral unitary $\bar{K}N$ amplitude from $\pi \Sigma K^{+}$ photoproduction data
• D Mesons in Nuclear Matter: A DN Coupled-Channel Equations Approach
• Weak decays of heavy hadrons into dynamically generated resonances
• The s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
• Chiral dynamics of the S11(1535) and S11(1650) resonances revisited
• New insights into antikaon-nucleon scattering and the structure of the Lambda(1405)
• Kaonic hydrogen X-ray measurement in SIDDHARTA
• Looking for a hidden-charm pentaquark state with strangeness $S=-1$ from ${\Xi }_b^{-}$ decay into $J/\psi K^{-}\Lambda$
• Kaonic production of Lambda(1405) off deuteron target in chiral dynamics
• Couplings in coupled channels versus wave functions in the case of resonances: application to the two $\Lambda (1405)$ states
• Meson-Baryon Effective Chiral Lagrangians to O(q^3)
• On the isospin 0 and 1 resonances from $\pi \Sigma$ photoproduction data
• Interaction of vector mesons with baryons and nuclei
• A gauge invariant chiral unitary framework for kaon photo- and electroproduction on the proton
• Review of the $\mathbf{\Lambda }$(1405): A curious case of a strange-ness resonance
• Antikaon-nucleon interaction and Lambda(1405) in chiral SU(3) dynamics
• Non-perturbative methods for a chiral effective field theory of finite density nuclear systems
• Lambda(1405) poles obtained from pi0-Sigma0 photoproduction data
• Coupling vector and pseudoscalar mesons to study baryon resonances
• Predictions for the ${\Lambda }_b\to J/\psi \Lambda (1405)$ decay
• Kaon-nucleon scattering lengths from kaonic deuterium experiments revisited
• The $\bar{K}NN$ system with chiral dynamics
• General considerations on the nature of $Z_b(10610)$ and $Z_b(10650)$ from their pole positions
• Faddeev fixed-center approximation to the $N\bar{K}K$ system and the signature of a $N^{\ast }(1920)(1/2^{+})$ state
• Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit
• The pole structure of the Lambda(1405) in a recent QCD simulation
• Separable potential model for $K^{-}N$ interactions at low energies
• On the nature of the $\Lambda (1405)$ and $\Lambda (1670)$ from their $N_c$ behavior in chiral dynamics
• The role of the $\Lambda (1405)$ in the $pp\to p{K}^{+}\Lambda (1405)$ reaction
• $P$-wave coupled-channel scattering of $B_s\pi ,B_s^{\ast }\pi ,B\overline{K},B^{\ast }\overline{K}$ and the puzzling $X(5568)$
• Strategy to find the two $\Lambda (1405)$ states from lattice QCD simulations
• ${\Sigma }_{1/2^{-}}^{\ast }(1380)$ in the ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$ decay
• Resonance on top of thresholds: the ${\Lambda }_c(2595{)}^{+}$ as an extremely fine-tuned state
• $NDK$, $\bar{K}DN$ and $ND\bar{D}$ molecules
• Anti-strange meson-baryon interaction in hot and dense nuclear matter
• The ${\Lambda }_b\to J/\psi K\Xi$ decay and the higher order chiral terms of the meson baryon interaction
• Kaonic hydrogen versus the $K^{-}p$ low energy data
• A new perspective on the Faddeev equations and the $\bar{K}NN$ system from chiral dynamics and unitarity in coupled channels
• The radiative decay of the $\Lambda (1405)$ and its two-pole structure
• $\bar{K}NN$ Absorption within the Framework of the Fixed Center Approximation to Faddeev equations
• Isospin violation in J/Psi to phi pi0 eta decay and the f0-a0 mixing
• Visible narrow cusp structure in ${\Lambda }_c^{+}\to p{K}^{-}{\pi }^{+}$ enhanced by triangle singularity
• Improved Fixed Center Approximation of the Faddeev equations for the $\bar{K}NN$ system with S=0
• Critical review of [K- ppn] bound states
• Faddeev-Chiral Unitary Approach to the $K^{-}d$ scattering length
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Negative parity $\Lambda$ and $\Sigma$ resonances coupled to pseudoscalar and vector mesons
• Helicity Amplitudes of the Lambda(1670) and two Lambda(1405) as dynamically generated resonances
• Kaon induced Lambda(1405) production on a deuteron target at DAFNE
• S- and p-wave structure of $S=-1$ meson-baryon scattering in the resonance region
• Evidence of the low-lying baryon ${\Sigma }^{\ast }(1/2^{-})$ in the process ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$
• The $K^{-}p\to {\Sigma }^0{\pi }^0$ reaction at low energies in a chiral quark model
• Roles of $a_0(980)$, $\Lambda (1670)$, and $\Sigma (1385)$ in the ${\Lambda }_c^{+}\to \eta \Lambda {\pi }^{+}$ decay
• Determination of the pi Sigma scattering lengths from the weak decays of Lambda_c
• Search for the ${\Sigma }^{\ast }$ state in ${\Lambda }_c^{+}\to {\pi }^{+}{\pi }^0{\pi }^{-}{\Sigma }^{+}$ decay by triangle singularity
• Recoil corrections in antikaon-deuteron scattering
• ${\chi }_{c0}(1P)$ decay into $\bar{\Sigma }\Sigma \pi$ in search of an $I=1$, $1/2^{-}$ baryon state around $\bar{K}N$ threshold
• The Octet Meson and Octet Baryon Interaction with strangeness and the $\Lambda (1405)$
• $\Lambda (1405)$ production in the process ${\chi }_{c0}(1P)\to \bar{\Lambda }\Sigma \pi$
• Preliminary study of the anti-K N interaction in a chiral constituent quark model
• Semileptonic ${\Lambda }_c$ decay to $\nu l^{+}$ and $\Lambda (1405)$
• Low energy reactions $K^{-}p\to {\Sigma }^0{\pi }^0$, $\Lambda {\pi }^0$, ${\bar{K}}^{0}n$ and the strangeness $S=-1$ hyperons
• New insights into the pole parameters of the $\Lambda (1380)$, the $\Lambda (1405)$ and the $\Sigma (1385)$
• The $\sigma K$ coupling in the chiral unitary approach and the isoscalar $\bar{K}N$, $\bar{K}A$ interaction
• Chiral Unitary Dynamics of Hadrons and Hadrons in a Nuclear Medium
• Determination of the compositeness of resonances from decays: the case of the $B_s^0\to J/\psi f_1(1285)$
• An in-medium chiral power counting for nuclear matter and some applications
• Pole trajectories of the $\Lambda (1405)$ helps establish its dynamical nature
• Is two-poles' $\Lambda (1405)$ one state or two?
• Aspects of Strangeness -1 Meson-Baryon Scattering
• Photo-production of lowest ${\Sigma }_{1/2^{-}}^{\ast }$ state within the Regge-effective Lagrangian approach
• Low energy reaction $K^{-}p\to \Lambda \eta$ and the negative parity $\Lambda$ resonances
• Composite nature of $Z_b$ states from data analysis
• Flavor decomposition of the pion-nucleon $\sigma$-term
• The $\Lambda (1405)$ in resummed chiral effective field theory
• Baryon Resonances
• What We Know About the Lambda(1405)
• New insights in \bar{K}N scattering and the Λ(1405)
• On Lowest Lying ${\frac{1}{2}}^{-}$ Octet Baryons
• Baryon polarization in low-energy unpolarized meson-baryon scattering
• Two, three, many body systems involving mesons
• Testing the bootstrap constraints in the strange sector
• Testing the nature of the $\Lambda$(1520) in the $J/\psi \to \bar{\Lambda }{K}^{-}p$ and $J/\psi \to \bar{\Lambda }{\pi }^{+}{\pi }^{-}\Lambda$ reactions
• Dense Hadronic Matter in Neutron Stars
• The odd-parity strange baryons $\Sigma ({\frac{1}{2}}^{-})$ below 1.8 GeV with Hamiltonian effective field theory
• Precise Measurement of Matter-Antimatter Asymmetry with Entangled Hyperon Antihyperon Pairs
• Polarized $p{K}^{-}$ scattering in Unitary Baryon Chiral Perturbation Theory
• Dynamically generated resonances
• The nature of the Lambda(1405)
• Resonances in chiral unitary approaches
• Search for the low-lying excited baryon ${\Sigma }^{\ast }(1/2^{-})$ through process ${\Lambda }_c^{+}\to \Lambda K^0{\pi }^{+}$
• Recent Developments in Chiral Unitary Dynamics of Resonances
• $N^{\ast }(1920)(1/2^{+})$ state in the $NK\bar{K}$ system
• Strange mesons in nuclei and neutron stars