Measurement of the direct CP violation by NA48 experiment at CERN
نویسنده
چکیده
The NA48 experiment at the CERN SPS accelerator aims to measure Re(ε′/ε), the direct CP violation parameter in K → 2π decays, to the precision of 2 × 10−4. In the year 1999, the NA48 collaboration has published its first measurement based on the 1997 data. The presented result is a preliminary measurement from data collected in the 1998 run which contain 2.5 times more KL → 2π decays than the 1997 data. A combined result of Re(ε′/ε)=(14.0±4.3)×10−4 has been obtained.
منابع مشابه
Measurement of Direct Cp Violation by Na48
The NA48 experiment at the CERN SPS aims to search for direct CP /violation in the K system through the measurement of Re(ε/ε) with high accuracy. In 1999 the NA48 collaboration has published its first measurement based on 1997 data. The final result based on 1998 and 1999 data is presented in this article. The result, combined with 1997 data, Re(ε/ε) = (15.3 ± 2.6) × 10, definitely established...
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تاریخ انتشار 2000