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A new measurement of direct CP violation in two pion decays of the neutral kaon / NA48 Collaboration
The NA48 experiment at CERN has performed a new measurement of direct CP violation, based on data taken in 1997 by simultaneously collecting K_L and K_S decays into pi0pi0 and pi+pi-. The result for the CP violating parameter Re(epsilon'/epsilon) is (18.5 +/- 4.5(stat)} +/- 5.8 (syst))x10^{-4}..
hep-ex/9909022; CERN-EP-99-114; CERN-EP-99-114.- Geneva : CERN, 1999 - 18 p. - Published in : Phys. Lett. B 465 (1999) 335-48 Fulltext: arXiv:hep-ex_9909022 - PDF; ep-99-114 - PDF; External link: Preprint - Please contact the library if you need to access this document.

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