Chirally motivated $\bar{K}N$ amplitudes for in-medium applications

Abstract

A new fit of a chirally motivated coupled-channels model for meson-baryon interactions is presented including the recent SIDDHARTA data on the 1s level characteristics of kaonic hydrogen. The kaon-nucleon amplitudes generated by the model are fully consistent with our earlier studies. We argue that a sharp increase of the real part of the in-medium $K^{-}p$ amplitude at subthreshold energies provides a link between the shallow $\bar{K}$-nuclear optical potentials obtained microscopically from threshold $\bar{K}N$ interactions and the phenomenological deep ones deduced from kaonic atoms data. The impact on the $A$-dependence of the $\Lambda$-hypernuclear formation rates measured in reactions with stopped kaons is discussed too.

18 pages, updated to match the version accepted for publication in a special issue of Nuclear Physics A on Strangeness Nuclear Physics

References in corpus (9)

• Chiral SU(3) theory of antikaon-nucleon interactions with improved threshold constraints
• Effective Kbar N interaction based on chiral SU(3) dynamics
• K^- p scattering length from scattering experiments
• Kaonic hydrogen X-ray measurement in SIDDHARTA
• Lineshape of the Lambda(1405) Hyperon Measured Through its Sigma0 pion0 Decay
• Calculations of $K^{-}$ nuclear quasi-bound states based on chiral meson-baryon amplitudes
• Kaonic hydrogen versus the $K^{-}p$ low energy data
• Kaonic atoms and in-medium $K^{-}N$ amplitudes
• Constraints on the threshold K- nuclear potential from FINUDA (stopped K-, pi-) hypernuclear spectra

Cited by in corpus (51)

• Strangeness in nuclear physics
• Meson-baryon reactions with strangeness -1 within a chiral framework
• Realistic calculations of Kbar-N-N, Kbar-N-N-N, and Kbar-Kbar-N-N quasibound states
• Two-pole structures in QCD: Facts, not fantasy!
• Coupled-channel effects in hadron-hadron correlation functions
• 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
• QCD and the Strange Baryon Spectrum
• Structure of the $\mathbf{\Lambda }(1405)$ from Hamiltonian effective field theory
• $S=-1$ meson-baryon interaction and the role of isospin filtering processes
• $K^{-}N$ amplitudes below threshold constrained by multinucleon absorption
• Recent studies of kaonic atoms and nuclear clusters
• Kaonic atoms and in-medium K-N amplitudes II: interplay between theory and phenomenology
• Cross-channel constraints on resonant antikaon-nucleon scattering
• Calculations of $K^{-}$ nuclear quasi-bound states based on chiral meson-baryon amplitudes
• In-medium Eta-Nucleon interactions and Eta nuclear bound states
• Faddeev calculations of the $\bar{K}NN$ system with chirally-motivated $\bar{K}N$ interaction. I. Low-energy $K^{-}d$ scattering and antikaonic deuterium
• Hadron Physics at J-PARC
• $K^{-}$- nuclear states: Binding energies and widths
• Faddeev-Chiral Unitary Approach to the $K^{-}d$ scattering length
• Kaonic atoms and in-medium $K^{-}N$ amplitudes
• S- and p-wave structure of $S=-1$ meson-baryon scattering in the resonance region
• Chirally motivated separable potential model for $\eta N$ amplitudes
• Three-body antikaon-nucleon systems
• Pole position of $\Lambda (1405)$ measured in $d(K^{-},n)\pi \Sigma$ reactions
• Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
• On self-gravitating strange dark matter halos around galaxies
• Single- and two-nucleon antikaon absorption in nuclear matter with chiral meson-baryon interactions
• Are there any narrow $K^{-}$- nuclear states?
• New insights into the pole parameters of the $\Lambda (1380)$, the $\Lambda (1405)$ and the $\Sigma (1385)$
• Double-pole nature of $\Lambda (1405)$ studied with coupled-channel complex scaling method using complex-range Gaussian basis
• Recent developments in antikaon-nucleon dynamics
• Faddeev approach to the reaction $K^{-}d\to \pi \Sigma n$ at $p_K=1$ GeV/c
• Pole trajectories of the $\Lambda (1405)$ helps establish its dynamical nature
• First application of a microscopic $K^{-}NN$ absorption model in calculations of kaonic atoms
• Kaonic Atoms at the DA$\Phi$NE Collider with the SIDDHARTA-2 Experiment
• The $\Lambda (1405)$ in resummed chiral effective field theory
• In-medium antikaon interactions and bound states
• $\Lambda (1405)$ mediated triangle singularity in the $K^{-}d\to p{\Sigma }^{-}$ reaction
• A possible interpretation of $\Lambda$ baryon spectrum with pentaquark components
• From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States
• Separable potential model for meson-baryon interaction beyond the S-wave
• On the origin and movement of the poles in the coupled channels model for $\bar{K}N$ interactions
• Chirally motivated $\pi \Sigma$-$\bar{K}N$ model in a finite volume
• On the Stability of $\Lambda (1405)$ Matter
• A walk through the world of chiral dynamics
• Theoretical approaches to low energy $\bar{K}N$ interactions
• On the widths and binding energies of $K^{-}$ nuclear states and the role of $K^{-}$ multi-nucleon interactions
• Calculations of kaonic nuclei based on chiral meson-baryon coupled channel interaction models
• First tests of the full SIDDHARTA-2 experimental apparatus with a 4 He gaseous target
• Dynamically generated hadronic states in the $\bar{K}N$ and $\eta N$ coupled-channels interactions