A determination of the CP violation parameter eta(+-) from the decay of strangeness-tagged neutral kaons

Authors
Apostolakis, A Aslanides, E Backenstoss, G Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F Bloch, P Carlson, P Carroll, M Cawley, E Chertok, MB Danielsson, M Dejardin, M Derre, J Ealet, A Eleftheriadis, C Fetscher, W Fidecaro, M Filipcic, A Francis, D Gabathuler, E Gamet, R Gerber, HJ Go, A Haselden, A Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K Kettle, PR Kokkas, P Kreuger, R Le Gac, R Leimgruber, F Mandic, I Manthos, N Marel, G Mikuz, M Miller, J Montanet, F Muller, A Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P Polivka, G Rickenbach, R Roberts, BL Ruf, T Sakeliou, L Schafer, M Schaller, LA Schietinger, T Schopper, A Tauscher, L Thibault, C Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S Weber, P Wigger, O Wolter, M Yeche, C Zavrtanik, D Zimmerman, D
Citation
A. Apostolakis et al., A determination of the CP violation parameter eta(+-) from the decay of strangeness-tagged neutral kaons, PHYS LETT B, 458(4), 1999, pp. 545-552
Citations number
10
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
458
Issue
4
Year of publication
1999
Pages
545 - 552
Database
ISI
SICI code
0370-2693(19990715)458:4<545:ADOTCV>2.0.ZU;2-V
Abstract
We report a measurement of the CP violation parameter eta(+-) from the time -dependent asymmetry between the decay rates of initially tagged K-0 and (K ) over bar(0). The results are based on the complete data sample collected by the CPLEAR collaboration. With Delta m = (530.1 +/- 1.4) X 10(7)(h) over bar s(-1) and tau(S) = (89.34 +/- 0.08) ps, the values obtained are \eta(-)\ = (2.264 +/- 0.023(stat) +/- 0.026(syst) +/- 0.007 tau(s)) x 10(-3) and phi(+-) = 43.19 degrees +/- 0.53(stat)degrees +/- 0.28(syst)degrees + 0.42 (Delta m)degrees. (C) 1999 Published by Elsevier Science B.V. All rights re served.