Measurement of $\epsilon'/\epsilon$ from the NA48 experiment

Using data collected in 1998 by the NA48 experiment, a preliminary measurement of the direct CP violation parameter Re (ε0 /ε) is here presented, together with a discussion of the experimental method, data analysis and systematic studies. The result is Re (ε0 /ε) = (12.2 ± 4.9) × 10−4, and combined with the previously published NA48 result (based from data collected in 1997) gives Re (ε0 /ε) = (14.0 ± 4.3) × 10−4.