The KLOE Physics Program

The KLOE experiment, running at the Frascati DAΦNE φ‐factory since 1999, was designed to measure the R(e′/e) ratio to an accuracy of few 10−4. However, its physics program is wider than CP violation, covering both kaon and non‐kaon physics items. During the year 2000 data taking, ∼ 20 pb−1 were collected and a total integrated luminosity of 200 pb−1 is expected by the end of 2001. A wealth of measurements can be addressed with these data and a number of preliminary results have been already obtained using the year 2000 statistics, in particular on rare KS decays. After a brief description of the detector, the KS tagging technique is discussed. Preliminary measurements of BR(KS → π+π−)/BR(KS → π0π0) and BR(KS → πev) are then presented. Finally, the perspectives for future analyses are discussed.