The direct CP violation parameter Re(ε'/ε) has been measured from two-pion decays of neutral kaons by the NA48 experiment at CERN SPS. The analysis of a new data sample, collected in 2001 under different conditions compared to earlier years (1997–99), provide the result: Re(ε'/ε) = (13.7 ± 3.1) × 10^−4. Combining this result with that published from 1997-98-99 data, we obtain an overall value Re(ε'/ε) = (14.7 ± 2.2) × 10^−4 from the NA48 experiment.
Recent results on direct CP violation from NA48 experiment at CERN / Bizzeti, Andrea. - STAMPA. - 1:(2003), pp. 536-548. (Intervento presentato al convegno 3rd International Sakharov Conference on Physics tenutosi a Moscow, Russia nel 24-29 june 2002).
Recent results on direct CP violation from NA48 experiment at CERN
BIZZETI, Andrea
2003
Abstract
The direct CP violation parameter Re(ε'/ε) has been measured from two-pion decays of neutral kaons by the NA48 experiment at CERN SPS. The analysis of a new data sample, collected in 2001 under different conditions compared to earlier years (1997–99), provide the result: Re(ε'/ε) = (13.7 ± 3.1) × 10^−4. Combining this result with that published from 1997-98-99 data, we obtain an overall value Re(ε'/ε) = (14.7 ± 2.2) × 10^−4 from the NA48 experiment.
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