CERN Accelerating science

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A precise measurement of the direct CP violation parameter $\Re(\epsilon'/\epsilon)$ / NA48 Collaboration
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 $K_{L} \to \pi^{0}\pi^{0}$ events collected during the 1998 and 1999 running periods, a result of $\Re(\epsilon'/\epsilon) = (15.0 \pm 2.7) \times 10^{-4}$ has been obtained. [...]
hep-ex/0110019; CERN-EP-2001-067; CERN-EP-2001-067.- Geneva : CERN, 2001 - 42 p. - Published in : Eur. Phys. J. C 22 (2001) 231-254 Fulltext: ep-2001-067 - PDF; arXiv:hep-ex_0110019 - PDF; External link: Preprint - Please contact the library if you need to access this document.

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