SEARCH FOR CP VIOLATION IN THE DECAY OF TAGGED (K)OVER-BAR(0) AND K-0TO PI(0)PI(0)PI(0)

Authors
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 C FARAVEL L FETSCHER W FIDECARO M FILIPCIC J FRANCIS D FRY J GABATHULER E GAMET R GERBER HJ GO A HASELDEN A HAYMAN PJ HENRYCOUANNIER F HOLLANDER RW JONAND K KETTLE PR KOKKAS P KREUGER R LEGAC 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 VANEIJK CWE VLACHOS S WEBER P WIGGER O WOLTER M ZAVRTANIK D ZIMMERMAN D
Citation
A. Angelopoulos et al., SEARCH FOR CP VIOLATION IN THE DECAY OF TAGGED (K)OVER-BAR(0) AND K-0TO PI(0)PI(0)PI(0), Physics letters. Section B, 425(3-4), 1998, pp. 391-398
Citations number
9
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
425
Issue
3-4
Year of publication
1998
Pages
391 - 398
Database
ISI
SICI code
0370-2693(1998)425:3-4<391:SFCVIT>2.0.ZU;2-W
Abstract
The CPLEAR experiment measured the eigentime-dependent asymmetry in th e 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-violatin g K-S and the CP-conserving K-L decay amplitudes. Without assuming CPT invariance, we obtain for the CP-violation parameter eta(ooo) the val ues 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 e qual 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 Sci ence B.V. All rights reserved.