6533b852fe1ef96bd12ab6e4

RESEARCH PRODUCT

Precision measurement of the K S meson lifetime with the KLOE detector

The Kloe CollaborationF. AmbrosinoA. AntonelliM. AntonelliF. ArchilliG. BencivenniCesare BiniC. BloiseS. BocchettaF. BossiP. BranchiniG. CaponT. CapusselaF. CeradiniP. CiambroneA. De AngelisE. De LuciaM. De MariaAntonio De SantisP. De SimoneGuido De ZorziA. AngelisE. LuciaM. Maria Antonio De SantisA. SantisP. Simone Guido De ZorziG. ZorziA. DenigAntonio Di DomenicoC. Di DonatoB. Di MiccoA. DomenicoC. DonatoB. MiccoM. DreucciG. FeliciSalvatore FiorePaolo FranziniC. GattiPaolo GauzziS. GiovannellaE. GrazianiM. JacewiczV. KulikovJ. Lee FranziniM. MartiniP. MassarottiS. MeolaS. MiscettiM. MoulsonS. MullerF. MurtasM. NapolitanoF. NguyenM. PalutanA. PasseriVincenzo PateraP. SantangeloB. SciasciaA. SibidanovT. SpadaroC. TacciniL. TortoraP. ValenteG. VenanzoniR. Versaci

subject

PhysicsHigh Energy Physics - Experiment (hep-ex)Particle physicsPhysics and Astronomy (miscellaneous)MesonDetectorFOS: Physical sciencesProper timeHigh Energy Physics::ExperimentEngineering (miscellaneous)High Energy Physics - ExperimentLarge sample

description

Using a large sample of pure, slow, short lived K0 mesons collected with KLOE detector at DaFne, we have measured the KS lifetime. From a fit to the proper time distribution we find tau = (89.562 +- 0.029_stat +- 0.043_syst) ps. This is the most precise measurement today in good agreement with the world average derived from previous measurements. We observe no dependence of the lifetime on the direction of the Ks.

yearjournalcountryeditionlanguage
2010-11-11The European Physical Journal C
https://doi.org/10.1140/epjc/s10052-011-1604-7