MEASUREMENT OF THE DECAY K-L-]E(-)GAMMA-GAMMA()E()

Authors
SETZU MG NAPPI A BEISSER A BEIER T BLUMER H BUCHHOLZ P COWARD D KLEINKNECHT K LEBER F RENK B ROHRER H SANDER HG SCHEERER F SCHEIDT J STAECK J WAGNER A BARR GD CUNDY D DOBLE N GATIGNON L GRAFSTROM P HAGELBERG R WAHL H PEACH KJ AUGE E FOURNIER D ICONOMIDOUFAYARD L PERDEREAU O SCHAFFER AC SERIN L BERTANZA L BIGI A CALAFIURA P CALVETTI M CAROSI R CASALI R FANTECHI R MANNELLI I MARZULLI VM PIERAZZINI GM HOLDER M KREUTZ A WERTHENBACH R
Citation
Mg. Setzu et al., MEASUREMENT OF THE DECAY K-L-]E(-)GAMMA-GAMMA()E(), Physics letters. Section B, 420(1-2), 1998, pp. 205-210
Citations number
9
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
420
Issue
1-2
Year of publication
1998
Pages
205 - 210
Database
ISI
SICI code
0370-2693(1998)420:1-2<205:MOTDK>2.0.ZU;2-H
Abstract
The full data set of the NA31 experiment at CERN has been used to anal yse the decay mode K-L(0) --> e(+)e(-) gamma gamma. A signal of 47 eve nts has been observed with an estimated background of 6.9 events. The total number of kaon decays in the decay volume was determined to be ( 2.1 +/- 0.1(stat)).10(9). This corresponds to a branching ratio of (8. 0 +/- 1.5(-1.2)(+1.4)).10(-7). (C) 1998 Published by Elsevier Science B.V.