6533b870fe1ef96bd12d048b
RESEARCH PRODUCT
Measurement of the η→3π0 slope parameter α with the KLOE detector
S. MeolaS. MiscettiMarek JacewiczR. VersaciStefan E. MüllerClaudio GattiC. BloiseT. CapusselaG. VenanzoniF. NguyenJuliet Lee-franziniF. BossiG. F. XuG. CaponP. BranchiniM. DreucciMassimo AntonelliA. AntonelliM. PalutanP. De SimoneC. Di DonatoS. GiovannellaP. MassarottiBarbara SciasciaM. MartiniCecilia TacciniPaolo ValenteS. FioreFilippo CeradiniL. TortoraG. FeliciT. SpadaroA. PasseriPaolo CiambroneP. BeltrameVincenzo PateraA. SciubbaW. KlugeE. De LuciaFlavio ArchilliP. GauzziA. FerrariG. BencivenniP. FranziniA. Di DomenicoB. Di MiccoCesare BiniF. PerfettoG. De ZorziF. AmbrosinoS. BocchettaA. DenigPaolo SantangeloPierluigi CampanaF. MurtasM. NapolitanoM. MoulsonA. De SantisV. V. Kulikovsubject
PhysicsNuclear physicsNuclear and High Energy PhysicsParticle physicsMesonElectron–positron annihilationDetectorPiRadiative transferDalitz plotdescription
Abstract We present a measurement of the slope parameter α for the η → 3 π 0 decay, with the KLOE experiment at the DAΦNE ϕ -factory, based on a background free sample of ∼17 million η mesons produced in ϕ radiative decays. By fitting the event density in the Dalitz plot we determine α = − 0.0301 ± 0.0035 stat − 0.0035 + 0.0022 syst . The result is in agreement with recent measurements from hadro- and photo-production experiments.
year | journal | country | edition | language |
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2010-10-01 | Physics Letters B |