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 → π0π0 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(epsilon-prime/epsilon)
ANZIVINO, Giuseppina;IMBERGAMO, ERMANNO;NAPPI, Aniello;PICCINI, Mauro
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 → π0π0 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 in questo prodotto:
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