A detailed description of the analysis of the decay of neutral kaons to ${\mathrm{\pi^+\pi^-}}$ in the CPLEAR experiment

A. Apostolakis et al.,E. Aslanides,G. Backenstoss,P. Bargassa,O. Behnke, A. Benelli,V. Bertin,F. Blanc, P. Carlson,M. Carroll,M. Danielsson, M. Dejardin,J. Derre,A. Ealet,C. Eleftheriadis,W. Fetscher,M. Fidecaro,D. Francis, E. Gabathuler,R. Gamet,A. Haselden,F. Henry-Couannier,K. Jon-And, P. Kokkas,R. Kreuger,F. Leimgruber,N. Manthos,G. Marel,J. Miller,F. Montanet,A. Muller,T. Nakada,B. Pagels,I. Papadopoulos,P. Pavlopoulos,G. Polivka,R. Rickenbach,L. Sakeliou,T. Schietinger,A. Schopper, L. Tauscher,C. Thibault, F. Touchard,C. Touramanis,S. Vlachos,O. Wigger,M. Wolter, D. Zavrtanik,D. Zimmerman,Universityof Athens, Universityof Basle, Universityof Coimbra

EUROPEAN PHYSICAL JOURNAL C（2000）

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摘要

A detailed description is given of the analysis of neutral kaons decaying to pi (+)pi (-), based on the complete set of data collected with the CPLEAR experiment. Using a novel approach involving initially strangeness-tagged K-0 and (K) over bar (0), the time-dependent decay-rate asymmetry has been measured. This asymmetry, resulting from the interference between the K-S and K-L decay amplitudes, has enabled both the magnitude and phase of the CP-violation parameter, eta (+-), to be measured, with a precision comparable to that of the current world-average values.

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A detailed description of the analysis of the decay of neutral kaons to in the CPLEAR experiment

A detailed description of the analysis of the decay of neutral kaons to ${\mathrm{\pi^+\pi^-}}$ in the CPLEAR experiment