$K^{-}N$ amplitudes below threshold constrained by multinucleon absorption

Abstract

Six widely different subthreshold $K^{-}N$ scattering amplitudes obtained in SU(3) chiral-model EFT approaches by fitting to low-energy and threshold data are employed in optical-potential studies of kaonic atoms. Phenomenological terms representing $K^{-}$ multinucleon interactions are added to the EFT inspired single-nucleon part of the $K^{-}$-nucleus optical potential in order to obtain good fits to kaonic-atom strong-interaction level shifts and widths across the periodic table. Introducing as a further constraint the fractions of single-nucleon $K^{-}$ absorption at rest from old bubble-chamber experiments, it is found that only two of the models considered here reproduce these absorption fractions. Within these two models, the interplay between single-nucleon and multinucleon $K^{-}$ interactions explains features observed previously with fully phenomenological optical potentials. Radial sensitivities of kaonic atom observables are also re-examined, and remarks are made on the role of `subthreshold kinematics' in absorption at rest calculations.

24 pages, 7 figures, 5 tables; slightly extended discussion. Nucl. Phys. A in press

References in corpus (18)

• A New Measurement of Kaonic Hydrogen X rays
• In-medium nuclear interactions of low-energy hadrons
• 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
• Effective kaon mass in dense baryonic matter: role of correlations
• Kaonic hydrogen X-ray measurement in SIDDHARTA
• Chiral Dynamics of Deeply Bound Pionic Atoms
• Chirally motivated $\bar{K}N$ amplitudes for in-medium applications
• Antikaon-nucleon interaction and Lambda(1405) in chiral SU(3) dynamics
• Chirally motivated K^- nuclear potentials
• K^- nuclear potentials from in-medium chirally motivated models
• Kaonic atoms and in-medium K-N amplitudes II: interplay between theory and phenomenology
• Branching ratios of mesonic and nonmesonic antikaon absorptions in nuclear medium
• Kaonic atoms and in-medium $K^{-}N$ amplitudes
• Radial sensitivity of kaonic atoms and strongly bound $\bar{K}$ states
• Kaon Absorption from Kaonic Atoms and Formation Spectra of Kaonic Nuclei
• Feasibility guidelines for kaonic-atom experiments with ultra-high-resolution X-ray spectrometry

Cited by in corpus (24)

• Strangeness in Nuclei and Neutron Stars
• Meson-nucleus potentials and the search for meson-nucleus bound states
• Review of the $\mathbf{\Lambda }$(1405): A curious case of a strange-ness resonance
• K${}^{-}$ multi-nucleon absorption cross sections and branching ratios in $\Lambda$p and ${\Sigma }^0$p final states
• $K^{-}$- nuclear states: Binding energies and widths
• Characterization of the SIDDHARTA-2 luminosity monitor
• $\Lambda$ hypernuclear potentials beyond linear density dependence
• Constraints from $\Lambda$ hypernuclei on the $\Lambda NN$ content of the $\Lambda$-nucleus potential
• A method to remove lower order contributions in multi-particle femtoscopic correlation functions
• Single- and two-nucleon antikaon absorption in nuclear matter with chiral meson-baryon interactions
• Are there any narrow $K^{-}$- nuclear states?
• Study of the p$-$p$-$K${}^{+}$ and p$-$p$-$K${}^{-}$ dynamics using the femtoscopy technique
• First application of a microscopic $K^{-}NN$ absorption model in calculations of kaonic atoms
• ${\Lambda }^{\ast }(1405)$-matter: stable or unstable?
• Compatibility of recent $\Xi$-nuclear bound state signals
• Novel halos in light kaonic nuclei as an indicator of nuclear equation of state at supra-normal densities
• From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States
• On the width of the $K^{-}$D atom ground state
• Revisiting ${\eta }^{\prime }(958)$ nuclear states
• $\Lambda NN$ content of $\Lambda$-nucleus potential
• On the Stability of $\Lambda (1405)$ Matter
• Dynamically generated hadronic states in the $\bar{K}N$ and $\eta N$ coupled-channels interactions
• On the widths and binding energies of $K^{-}$ nuclear states and the role of $K^{-}$ multi-nucleon interactions
• Onset of $\eta$ nuclear binding