6533b7d5fe1ef96bd1263c34

RESEARCH PRODUCT

A new measurement of the branching ratio of K(S) → γ γ

M. WittgenN. A. MolokanovaJ. CoganM. De BeerI. PellmannT.o. WhiteG. UnalH. FoxG. NeuhoferA. NappiE. RondioA. LacourtH. D. WahlC. CheshkovVladimir KekelidzeR. CarosiD.c. CundyR. TurlayM. ContalbrigoB. PeyaudB. HayBenedetto GoriniManfred JeitlerA. WinhartP. F. DalpiazJ. DuclosG. AnzivinoY. SchuéNadia PastroneA. MaierB. VallageMichal SzleperP. HristovMauro PicciniG.m. PierazziniT.j. GershonLouis FayardF. MarchettoB. Panzer-steindelG. BocquetYu. PotrebenikovR. FantechiSandro PalestiniJ. C. CholletMilene CalvettiI.g. KnowlesM. SavrieE. MenichettiMichael ZiolkowskiL. KöpkeR.s. DosanjhG.d. BarrGiacomo GrazianiL. WidhalmG.e. KalmusM. MarkytanM. LentiS. GiudiciLau GatignonH. DibonA. PetersM. VeltriH.g. BeckerA. LaiAndrea FormicaS. WronkaK. HoltzFabrizio PetrucciA. TkatchevH. TauregKonrad KleinknechtD. MadigojineNicolo CartigliaAugusto CeccucciP.l. FrabettiA. NortonCristina BiinoIvan MikulecMichael Andrew ParkerD. MarrasJ.b. ChezeP. CenciP. LubranoS.a. SchmidtM. SozziF. CostantiniP. Lopes Da SilvaA. KalterG. GoviR. SaccoM. HolderE. ImbergamoAlan W. WalkerA. GonidecAndrea BizzetiLydia Iconomidou-fayardP. MarouelliV. SchönhartingI. Wingerter-seezW. KubischtaG. TatishviliG. CollazuolL. BertanzaM. CirilliRoberta ArcidiaconoR. CasaliAdrian John BevanE. IacopiniNiels DobleP. GrafströmV. FalaleevT. Cuhadar-döC. CerriD.j. MundayJ. NassalskiM. PepeG. D'agostiniU. KochM. MartiniP. DebuS. A. WottonA. GaponenkoRainer WankeM. EppardG. FischerAnton TaurokA. MestvirishviliM. PernickaF. MartelliWojciech WislickiA. I. ZinchenkoA. GianoliCristina LazzeroniR. Granier De CassagnacRoberto GuidaE. OlaiyaE. MazzucatoVictoria Jane MartinMayda VelascoI. MannelliJ. OcarizB. Renk

subject

Nuclear physicsPhysicsNuclear and High Energy Physicsmesoni K; decadimentiLarge Hadron ColliderBranching fractionDetector

description

Abstract The decay rate of KS → γγ has been measured with the NA48 detector at the CERN SPS. A total of 149 KS → γγ events have been observed. The branching ratio is determined to be (2.58±0.36(stat)±0.22(sys))×10−6.

10.1016/s0370-2693(00)01143-6https://hdl.handle.net/11380/449601