Contribution of CPLEAR to the physics of the neutral-kaon system

Authors
Weber, P Angelopoulos, A 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, CA Faravel, L Fetscher, W Fidecaro, M Filipcic, A Francis, D Fry, J 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 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 Zavrtanik, D Zimmerman, D
Citation
P. Weber et al., Contribution of CPLEAR to the physics of the neutral-kaon system, NUCL PHYS A, 655(1-2), 1999, pp. 327C-336C
Citations number
17
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
655
Issue
1-2
Year of publication
1999
Pages
327C - 336C
Database
ISI
SICI code
0375-9474(19990809)655:1-2<327C:COCTTP>2.0.ZU;2-0
Abstract
We report the results of the CPLEAR experiment on CP-, T-, and CPT-symmetri es in the neutral kaon system. CP-violation parameters are given for the K- 0, (K) over bar(0) --> 2 pi, 3 pi decay channels. For the first time, T-vio lation is measured by a direct method using semileptonic decays. The CPT sy mmetry is tested through the parameters Im(delta) with a precision of 10(-5 ) and Re(delta) with a precision of a few 10(-4). With these two measuremen ts, the difference in mass and width of K-0 and (K) over bar(0) are bound t o within 10(-18) GeV. In the limit of CPT invariance in the neutral kaon de cays, the K-0 and (K) over bar(0) masses are equal within 10(-19) GeV.