The direct CP violation parameter Re(ε'/ε) has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 million KL → π0 π0 events collected during the 1998 and 1999 running periods, a result of Re(ε'/ε) = (15.0 ± 2.7)×10^−4 has been obtained. The result combined with the published 1997 sample is Re(ε'/ε) = (15.3 ± 2.6)×10^−4 .
A precise measurement of the direct CP violation parameter Re(ε′/ε) / A., L., D., M., A., B., R. S., D., T. J., G., B., H., G. E., K., C., L., D. J., M., M. D., N., E., O., M. A., P., T. O., W., S. A., W., G., B., G., B., A., C., T., C.D., D., C., G., D., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 22:(2001), pp. 231-254. [10.1007/s100520100822]
A precise measurement of the direct CP violation parameter Re(ε′/ε)
BIZZETI, Andrea;
2001
Abstract
The direct CP violation parameter Re(ε'/ε) has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 million KL → π0 π0 events collected during the 1998 and 1999 running periods, a result of Re(ε'/ε) = (15.0 ± 2.7)×10^−4 has been obtained. The result combined with the published 1997 sample is Re(ε'/ε) = (15.3 ± 2.6)×10^−4 .| File | Dimensione | Formato | |
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