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A precise measurement of the direct CP violation parameter Re(epsilon'/epsilon)
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The direct CP violation parameter Re(epsilon'/epsilon) 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->pi0pi0 events collected during the 1998 and 1999 running periods, a result of Re(epsilon'/epsilon) = (15.0 +- 2.7)x10-4 has been obtained. The result combined with the published 1997 sample is Re(epsilon'/epsilon) = (15.3 +- 2.6)x10-4.
Forward citations
Cited by 2 Pith papers
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Search for $CP$ violation in $\Xi_c^+\to\Sigma^+h^+h^-$ and $\Lambda_c^+\to ph^+h^-$ at Belle II
First individual A_CP measurements for Xi_c+ -> Sigma+ h+h- and Lambda_c+ -> p h+h- decays, all consistent with CP symmetry and with U-spin sum-rule predictions.
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Probing CP and flavor violation in neutral kaon decays with ALPs
The ratio of K_L to pi pi a versus K_L to pi0 a decay rates probes CP violation via flavor violation alone, with weak-interaction contributions emphasized as often neglected.
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