6533b820fe1ef96bd127a427

RESEARCH PRODUCT

Measurement of the decay KL→e+e−γγ

M. HolderI. MannelliR. CarosiG.m. PierazziniL. GatignonR. HagelbergO. PerdereauA. BigiM. CalvettiKen PeachR. WerthenbachArthur SchafferD. CowardD.c. CundyA. KreutzB. RenkA. BeisserDaniel FournierH. G. SanderJ. ScheidtG.d. BarrR. FantechiH. RohrerH. BlümerKonrad KleinknechtP. BuchholzE. AugéPaolo CalafiuraM.g. SetzuR. CasaliF. LeberF. ScheererA. WagnerA. NappiN. DobleP. GrafströmLaurent SerinJ. StaeckLydia Iconomidou-fayardL. BertanzaV.m. MarzulliH. D. WahlT. Beier

subject

Nuclear physicsPhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderBranching fractionFull data

description

The full data set of the NA31 experiment at CERN has been used to analyse the decay mode KOL → e+ e-γγ. A signal of 47 events 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 ± 0.1stat) · 109. This corresponds to a branching ratio of (8.0 ± 1.5+1.4-1.2)· 10-7. © 1998 Published by Elsevier Science B.V.

yearjournalcountryeditionlanguage
1998-02-01Physics Letters B
https://doi.org/10.1016/s0370-2693(97)01589-x