Cross-channel constraints on resonant antikaon-nucleon scattering

Abstract

Chiral perturbation theory and its unitarized versions have played an important role in our understanding of the low-energy strong interaction. Yet, so far, such studies typically deal exclusively with perturbative or nonperturbative channels. In this letter, we report on the first global study of meson-baryon scattering up to one-loop order. It is shown that covariant baryon chiral perturbation theory, including its unitarization for the negative strangeness sector, can describe meson-baryon scattering data remarkably well. This provides a highly non-trivial check on the validity of this important low-energy effective field theory of QCD. We show that the $\bar{K}N$ related quantities can be better described in comparison with those of lower-order studies, and with reduced uncertainties due to the stringent constraints from the $\pi N$ and $KN$ phase shifts. In particular, we find that the two-pole structure of $\Lambda (1405)$ persists up to one-loop order reinforcing the existence of two-pole structures in dynamically generated states.

arXiv comment11 pages, 3 figures; to appear in Physical Review Letters

References in corpus (87)

• 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 and the Low Energy Kaon-Nucleon Interaction
• Strangeness in nuclear physics
• Extended Partial-Wave Analysis of piN Scattering Data
• The chiral representation of the $\pi N$ scattering amplitude and the pion-nucleon sigma term
• A New Measurement of Kaonic Hydrogen X rays
• Scattering processes and resonances from lattice QCD
• Pion-nucleon scattering in chiral perturbation theory I: Isospin-symmetric case
• Renormalization of relativistic baryon chiral perturbation theory and power counting
• Chiral SU(3) theory of antikaon-nucleon interactions with improved threshold constraints
• Quantifying truncation errors in effective field theory
• Low lying axial-vector mesons as dynamically generated resonances
• Low lying S=-1 excited baryons and chiral symmetry
• $S=-1$ Meson-Baryon Unitarized Coupled Channel Chiral Perturbation Theory and the $S_{01}-$ $\Lambda$(1405) and $-\Lambda$(1670) Resonances
• K^- p scattering length from scattering experiments
• Lattice QCD Evidence that the Lambda(1405) Resonance is an Antikaon-Nucleon Molecule
• Evidence for the two pole structure of the Lambda(1405) resonance
• Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV
• Matching Heavy Particle Approach to Relativistic Theory
• Meson-baryon reactions with strangeness -1 within a chiral framework
• Spectrum and decays of kaonic hydrogen
• Improved constraints on chiral SU(3) dynamics from kaonic hydrogen
• Quantifying Correlated Truncation Errors in Effective Field Theory
• K${}^{-}$-proton scattering and the $\Lambda (1405)$ in dense matter
• Bayesian truncation errors in chiral effective field theory: nucleon-nucleon observables
• Implications for relic neutralinos of the theoretical uncertainties in the neutralino-nucleon cross-section
• Constraints on the chiral unitary $\bar{K}N$ amplitude from $\pi \Sigma K^{+}$ photoproduction data
• Standard Model anatomy of WIMP dark matter direct detection II: QCD analysis and hadronic matrix elements
• Chiral dynamics of kaon-nucleon interactions, revisited
• Pion-nucleon scattering in chiral perturbation theory II: Fourth order calculation
• A critical view on the deeply bound K^- pp system
• Low energy analysis of pi N --> pi N
• Measurement of the Sigma pi photoproduction line shapes near the Lambda(1405)
• Leading SU(3)-breaking corrections to the baryon magnetic moments in Chiral Perturbation Theory
• Two-pole structure of the $D_0^{\ast }(2400)$
• New insights into antikaon-nucleon scattering and the structure of the Lambda(1405)
• Lineshape of the Lambda(1405) Hyperon Measured Through its Sigma0 pion0 Decay
• Octet baryon masses in next-to-next-to-next-to-leading order covariant baryon chiral perturbation theory
• Photoproduction of Lambda(1405) and Sigma^{0}(1385) on the proton at E_γ= 1.5-2.4 GeV
• Towards a theory of hadron resonances
• Analyses of pion-nucleon elastic scattering amplitudes up to $O(p^4)$ in extended-on-mass-shell subtraction scheme
• DN interaction from meson exchange
• Chirally motivated $\bar{K}N$ amplitudes for in-medium applications
• Two-pole structures in QCD: Facts, not fantasy!
• Meson-Baryon Effective Chiral Lagrangians to O(q^3)
• Clues for the existence of two $K_1(1270)$ resonances
• Baryonic resonances close to the Kbar-N threshold: the case of Lambda(1405) in pp collisions
• On the isospin 0 and 1 resonances from $\pi \Sigma$ photoproduction data
• Towards high-order calculations of three-nucleon scattering in chiral effective field theory
• PANDA Phase One
• Review of the $\mathbf{\Lambda }$(1405): A curious case of a strange-ness resonance
• Magnetic moments of the Lambda(1405) and Lambda(1670) resonances
• Lambda(1405) poles obtained from pi0-Sigma0 photoproduction data
• A critical analysis on deeply bound kaonic states in nuclei
• QCD and the Strange Baryon Spectrum
• Aspects of meson-baryon scattering in three- and two-flavor chiral perturbation theory
• Recent developments in SU(3) covariant baryon chiral perturbation theory
• On the chiral effective meson-baryon Lagrangian at third order
• One- versus two-pole $\bar{K}N-\pi \Sigma$ potential: $K^{-}d$ scattering length
• Evidence for a new ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ in the old data of $K^{-}p\to \Lambda {\pi }^{+}{\pi }^{-}$ reaction
• Accurate relativistic chiral nucleon-nucleon interaction up to NNLO
• Elastic pion-nucleon scattering in chiral perturbation theory: A fresh look
• Structure near $K^{-}$+$p$+$p$ threshold in the in-flight ${}^3$He$(K^{-},\Lambda p)n$ reaction
• Further evidence for the ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ around 1380 MeV
• Possible $\Sigma ({\frac{1}{2}}^{-})$ under the ${\Sigma }^{\ast }(1385)$ peak in $K{\Sigma }^{\ast }$ photoproduction
• The pole structure of the Lambda(1405) in a recent QCD simulation
• Observation of a $\bar{K}NN$ bound state in the ${}^3\mathrm{He}(K^{-},\Lambda p)n$ reaction
• 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
• First Observation of the $\Lambda (1405)$ Line Shape in Electroproduction
• Hyperon resonances coupled to pseudoscalar- and vector-baryon channels
• The chiral S=-1 meson-baryon interaction with new constrains on the NLO contributions
• S- and p-wave structure of $S=-1$ meson-baryon scattering in the resonance region
• Role of the possible ${\Sigma }^{\ast }({\frac{1}{2}}^{-})$ state in the $\Lambda p\to \Lambda p{\pi }^0$ reaction
• Lambda (1405) photoproduction based on chiral unitary model
• DISTO data on Kpp
• First exclusive measurements of the K^-pp state - populated in the pp to K^+ Lambda p reaction at 2.85 GeV
• Photoproduction of $K^{+}\Lambda (1405)\to K^{+}{\pi }^0{\Sigma }^0$ extending to forward angles and low momentum transfer
• Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC
• ${\chi }_{c0}(1P)$ decay into $\bar{\Sigma }\Sigma \pi$ in search of an $I=1$, $1/2^{-}$ baryon state around $\bar{K}N$ threshold
• Photoproduction of ${\Lambda }^{\ast }$ and ${\Sigma }^{\ast }$ resonances with $J^P=1/2^{-}$ off the proton
• Meson-baryon scattering up to the next-to-next-to-leading order in covariant baryon chiral perturbation theory
• Correlations of $\mathbf{\pi N}$ Partial Waves for Multi-Reaction Analyses
• Pion-nucleon scattering to $\mathcal{O}(p^3)$ in heavy baryon SU(3) chiral perturbation theory
• Possible ${\Sigma }^{\ast }(1/2^{-})$ in the initial-state polarized $\gamma N\to K^{+}{\Sigma }^{\ast }(1385)\to K^{+}\pi \Lambda$ reaction near threshold
• Pion-nucleon scattering to order $p^4$ in SU(3) heavy baryon chiral perturbation theory

Cited by in corpus (16)

• Two-pole nature of the $\Lambda (1405)$ from lattice QCD
• Lattice QCD study of $\pi \Sigma -\bar{K}N$ scattering and the $\Lambda (1405)$ resonance
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Evidence of the low-lying baryon ${\Sigma }^{\ast }(1/2^{-})$ in the process ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• New insights into the nature of the $\Lambda (1380)$ and $\Lambda (1405)$ resonances away from the SU(3) limit
• Theoretical investigation of the molecular nature of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and the possibility of observing the $D\bar{D}K$ bound state $K_{c\bar{c}}(4180)$ in inclusive $e^{+}{e}^{-}\to c\bar{c}$ collisions
• Structure of the $\mathbf{\Lambda }(1670)$ resonance
• Pole trajectories of the $\Lambda (1405)$ helps establish its dynamical nature
• Compositeness of hadrons, nuclei, and atomic systems
• Photo-production of lowest ${\Sigma }_{1/2^{-}}^{\ast }$ state within the Regge-effective Lagrangian approach
• Reexamination of antinucleon-nucleon interactions in covariant chiral effective field theory
• The odd-parity strange baryons $\Sigma ({\frac{1}{2}}^{-})$ below 1.8 GeV with Hamiltonian effective field theory
• Octet baryon and heavy meson interactions in chiral effective field theory
• Producing $\Lambda (1405)$ and $\Lambda (1520)$ in ${\pi }^{-}p$ reaction to explore their inner structures
• Low-energy $N\varphi$ scattering from a pole-enhanced triangle diagram