AN UPPER LIMIT FOR THE BRANCHING RATIO OF THE DECAY K-S-]E(-)()E()

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 CARVALHO J CAWLEY E CHARALAMBOUS S CHARDIN G CHERTOK MB CODY A DANIELSSON M DEJARDIN M DERRE J EALET A ELEFTHERIADIS C EVANGELOU I FARAVEL L FERREIRAMARQUES R FETSCHER W FIDECARO M FILIPCIC A FRANCIS D FRY J GABATHULER E GAMET R GARRETA D GERBER HJ GO A HASELDEN A HAYMAN PJ HENRYCOUANNIER F HOLLANDER RW HUBERT E JONAND K KETTLE PR KOKKAS P KREUGER R LEGAC R LEIMGRUBER F LIOLIOS A MACHADO E MANDIC I MANTHOS N MAREL G MIKUZ M MILLER J MONTANET F MULLER A NAKADA T PAGELS B PAPADOPOULOS I PAVLOPOULOS P DACUNHA JP POLICARPO A POLIVKA G RICKENBACH R ROBERTS BL RUF T SAKELIOU L SANDERS P SCHAFER M SCHALLER LA SCHIETINGER T SCHOPPER A SOARES A AUSCHER L THIBAULT C TOUCHARD F TOURAMANIS C TRIANTIS F VANBEVEREN E VANEIJK CWE VLACHOS S WEBER P WIGGER O WOLTER M YECHE C ZAVRTANIK D ZIMMERMAN D
Citation
A. Angelopoulos et al., AN UPPER LIMIT FOR THE BRANCHING RATIO OF THE DECAY K-S-]E(-)()E(), Physics letters. Section B, 413(1-2), 1997, pp. 232-238
Citations number
7
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
413
Issue
1-2
Year of publication
1997
Pages
232 - 238
Database
ISI
SICI code
0370-2693(1997)413:1-2<232:AULFTB>2.0.ZU;2-4
Abstract
A search for the decay K-S --> e(+)e(-) was performed within the frame work of the CPLEAR experiment. Full event reconstruction together with e/pi separation allowed powerful background rejection and high signal acceptance. The analysis of the complete set of data yields the resul t: BR(K-S --> e(+)e(-)) < 1.4 x 10(-7) (90% CL), an improvement on the current experimental limit by a factor of 20. (C) 1997 Published by E lsevier Science B.V.