Conveners
Session V
- Angels Ramos (University of Barcelona)
The AMADEUS Collaboration conducted research aimed to experimentally investigate the low-energy K− hadronic interactions with light nuclei like hydrogen, helium, and carbon, in order to provide new constraints to the antikaon-nucleon strong interaction studies in the non-perturbative QDC regime. K− nuclear absorption, both at-rest and in-flight, are explored using the unique low-momentum and...
The measurements of $\pi\Sigma$ mass distributions in the $\gamma p \rightarrow K^{+}\pi\Sigma$ photoproduction reaction [1] probe the energy region of the $\Lambda(1405)$ resonance, just below the $\bar{K}N$ threshold, and provide new challenges for the theoretical models of $\pi\Sigma - \bar{K}N$ coupled channels interactions. Adopting the photoproduction model presented in [2, 3] and the...
Exotic hadronic atoms are a valuable tool to experimentally investigate the
strong interaction described by Quantum Chromodynamics (QCD). With kaonic
hydrogen/deuterium atoms one can directly measure the interaction at threshold and
will be able to extract the antikaon-nucleon scattering lengths at zero energy (no
interpolation to zero energy is necessary as in scattering experiments). The...
We have developed a microscopic model for the $K^-NN$ absorption in nuclear matter [1]. The absorption was described as a meson-exchange process and the primary $K^-N$ interaction strength was derived from the state-of-the-art chiral models. The medium modifications of the $K^-N$ scattering amplitudes due to the Pauli principle were taken into account. The model was applied in calculations of...
All five KEK and J-PARC two-body $\Xi^-$ capture events in light emulsion nuclei to single $\Lambda$
hypernuclei are consistent with Coulomb-assisted $1p_{\Xi^-}$ nuclear states. The underlying
$\Xi$-nuclear potential is strongly attractive
with nuclear-matter depth $V_{\Xi}\geq 20$ MeV [1], considerably larger than suggested by recent
LQCD, femtoscopy and EFT theoretical studies.
We...