Search for CP violation in the decay of tagged (K)over-bar(0) and K-0 to pi(0)pi(0)pi(0) (Journal article)

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, M. B./ Danielsson, M./ Dejardin, M./ Derre, J./ Ealet, A./ Eleftheriadis, C./ Faravel, L./ Fetscher, W./ Fidecaro, M./ Filipcic, J./ Francis, D./ Fry, J./ Gabathuler, E./ Gamet, R./ Gerber, H. J./ Go, A./ Haselden, A./ Hayman, P. J./ Henry-Couannier, F./ Hollander, R. W./ Jon-And, K./ Kettle, P. R./ 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, B. L./ Ruf, T./ Schafer, M./ Schaller, L. A./ Schietinger, T./ Schopper, A./ Tauscher, L./ Thibault, C./ Touchard, F./ Touramanis, C./ Van Eijk, C. W. E./ Vlachos, S./ Weber, P./ Wigger, O./ Wolter, M./ Zavrtanik, D./ Zimmerman, D./ Cplear Collaboration

The CPLEAR experiment measured the eigentime-dependent asymmetry in the rates of initially tagged (K) over bar(o) and K-o decaying to pi(o) pi(o) pi(o) in order to study the interference between the CP-violating K-S and the CP-conserving K-L decay amplitudes. Without assuming CPT invariance, we obtain for the CP-violation parameter eta(ooo) the values Re(eta(ooo))= 0.18 +/- 0.14(stat.) +/- 0.06(syst.) and Im(eta(ooo)) = 0.15 +/- 0.20(stat) +/- 0.03(syst:) Requiring Re(eta(ooo)) to be equal to Re(epsilon) we obtain Im(eta(ooo)) = -0.05 +/- 0.12(stat.) +/- 0.05(syst:) The corresponding upper limit for the branching ratio of the K-S --> pi(o) pi(o) pi(o) decay is deduced to be BKs --> pi o pi o pi o <1.9 x 10(-5) at the 90% confidence level. (C) 1998 Elsevier Science B.V. All rights reserved.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών
ISSN: 0370-2693
Link: <Go to ISI>://WOS:000074118100025
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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