Study of hyperon-pion resonances from kaonic absorption with KLOE

Abstract

Through the study of the absorptions of low momentum kaons in light target (4He and 12C), aspects of the hyperon-nucleon interaction in medium are investigated with the KLOE drift chamber with almost full acceptance. The in-medium modification of hadron properties is the main field of study for the strangeness sector in the non-perturbative regime of the low energy region of QCD. The behaviour of strange hadrons at extreme densities are of capital importance for the description of the nuclear equation of state and the evaluation of the strangeness component in the core of the neutron stars. The study of the antiK-hadron interactions inside the drift chamber of KLOE was initiated in order to search for signals from the formation of deeply bound kaonic nuclear states and the study of resonances like the Λ(1405) and the Σ(1385), and constitute a first step towards the preparation of the AMADEUS experiment at DAFNE, the e+e− collider of the Frascati National Laboratories (Italy) of INFN.