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PRECISE MEASUREMENT OF DIRECT CP-VIOLATION IN THE DECAYS OF NEUTRAL KAONS

    https://doi.org/10.1142/9789812777379_0010Cited by:0 (Source: Crossref)
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    Abstract:

    A new and precise measurement of the parameter of direct CP violation Re(ɛ′ /ɛ) has been determined by the NA48 experiment at the CERN SPS from the decay rates of neutral kaons into two pions. With seven times the previous statistics the combined result Re(ɛ′/ɛ) = (15.3 ± 2.6) × 10−4 clearly establishes direct CP-violation with 5.9 standard deviations significance.