Experiments at the DA Phi NE phi-factory

The Frascati e +e - collider, DAΨNE, operates at a center of mass energy of ∼1020MeV, the mass of the φ-meson. Three detectors have been realized, KLOE, DEAR, and FINUDA. The first two are presently collecting data in the two DAΨNE interaction regions (IR), while the third is being assembled in its pit inside the DAΨNE hall and will take data in the IR occupied by DEAR. The KLOE experiment, which is designed to measure CP and CPT violation parameters in the K SK L system, has collected so far ∼300 pb -1. Measurements obtained using the year 2000 data sample will be presented, which are focussed on K S physics and φ radiative decays. The DEAR experiment aims at studying the scattering lengths of the kaon-nucleon system, through a precise measurement of the K α line shifts in kaonic hydrogen and kaonic deuterium. With 2001 and 2002 data-taking periods the DEAR collaboration has demonstrated the capability of creating and detecting exotic atoms using the kaon flux from DAΨNE, by measuring the X-ray spectrum of kaonic nitrogen. The present status and perspectives of the DEAR experiment will be discussed. A brief report will be given at the end on the FINUDA physics program, aiming at the study of the A-hypernuclei levels and lifetimes.