6533b82dfe1ef96bd129162a
RESEARCH PRODUCT
A direct measurement of |Vcs| in hadronic W decays using a charm tag
R. BarateD. DecampP. GhezC. GoyS. JezequelJ.-p. LeesF. MartinE. MerleM.-n. MinardB. PietrzykR. AlemanyS. BravoM.p. CasadoM. ChmeissaniJ.m. CrespoE. FernandezM. Fernandez-bosmanLl. GarridoE. GraugèsA. JusteM. MartinezG. MerinoR. MiquelLl.m. MirP. MorawitzA. PachecoI. RiuH. RuizA. ColaleoD. CreanzaM. De PalmaG. IaselliG. MaggiM. MaggiS. NuzzoA. RanieriG. RasoF. RuggieriG. SelvaggiL. SilvestrisP. TempestaA. TricomiG. ZitoX. HuangJ. LinQ. OuyangT. WangY. XieR. XuS. XueJ. ZhangL. ZhangW. ZhaoD. AbbaneoU. BeckerG. BoixO. BuchmüllerM. CattaneoF. CeruttiV. CiulliG. DissertoriH. DrevermannR.w. FortyM. FrankF. GianottiT.c. GreeningA.w. HalleyJ.b. HansenJ. HarveyP. JanotB. JostI. LehrausO. LeroyP. MaleyP. MatoA. MintenA. MoutoussiF. RanjardL. RolandiD. SchlatterM. SchmittO. SchneiderP. SpagnoloW. TejessyF. TeubertE. TournefierA.e. WrightZ. AjaltouniF. BadaudG. ChazelleO. DeschampsS. DessagneA. FalvardC. FerdiP. GayC. GuicheneyP. HenrardJ. JoussetB. MichelS. MonteilJ-c. MontretD. PallinP. PerretF. PodlyskiJ.d. HansenJ.r. HansenP.h. HansenB.s. NilssonB. RenschA. WäänänenG. DaskalakisA. KyriakisC. MarkouE. SimopoulouA. VayakiA. BlondelJ.-c. BrientF. MachefertA. RougéM. SwynghedauwR. TanakaA. ValassiH. VideauE. FocardiG. ParriniK. ZachariadouM. CordenC. GeorgiopoulosA. AntonelliG. BencivenniG. BolognaF. BossiP. CampanaG. CaponV. ChiarellaP. LaurelliG. MannocchiF. MurtasG.p. MurtasL. PassalacquaM. Pepe-altarelliM. ChalmersL. CurtisJ.g. LynchP. NegusV. O'sheaB. RaevenC. RaineD. SmithP. Teixeira-diasA.s. ThompsonJ.j. WardR. CavanaughS. DhamotharanC. GewenigerP. HankeV. HeppE.e. KlugeA. PutzerK. TittelS. WernerM. WunschR. BeuselinckD.m. BinnieW. CameronP.j. DornanM. GironeS. GoodsirN. MarinelliE.b. MartinJ. NashJ. NowellH. PrzysiezniakA. SciabàJ.k. SedgbeerE. ThomsonM.d. WilliamsV.m. GheteP. GirtlerE. KneringerD. KuhnG. RudolphC.k. BowderyP.g. BuckG. EllisA.j. FinchF. FosterG. HughesR.w.l. JonesN.a. RobertsonM. SmizanskaM.i. WilliamsI. GiehlF. HölldorferK. JakobsK. KleinknechtM. KröckerA.-s. MüllerH.-a. NürnbergerG. QuastB. RenkE. RohneH.-g. SanderS. SchmelingH. WachsmuthC. ZeitnitzT. ZieglerJ.j. AubertA. BonissentJ. CarrP. CoyleA. EaletD. FouchezA. TilquinM. AleppoM. AntonelliS. GilardoniF. RagusaV. BüscherH. DietlG. GanisK. HüttmannG. LütjensC. MannertW. MännerH.-g. MoserS. SchaelR. SettlesH. SeywerdH. StenzelW. WiedenmannG. WolfP. AzzurriJ. BoucrotO. CallotS. ChenM. DavierL. DuflotJ.-f. GrivazPh. HeusseA. JacholkowskaM. KadoJ. LefrançoisL. SerinJ.-j. VeilletI. VideauJ.-b. De Vivie De RégieD. ZerwasG. BagliesiT. BoccaliC. BozziG. CalderiniR. Dell'orsoI. FerranteA. GiassiA. GregorioF. LigabueP.s. MarrocchesiA. MessineoF. PallaG. RizzoG. SanguinettiG. SguazzoniR. TenchiniA. VenturiP.g. VerdiniG.a. BlairJ. ColesG. CowanM.g. GreenD.e. HutchcroftL.t. JonesT. MedcalfJ.a. StrongD.r. BotterillR.w. ClifftT.r. EdgecockP.r. NortonJ.c. ThompsonI.r. TomalinB. Bloch-devauxP. ColasB. FabbroG. FaïfE. LançonM.-c. LemaireE. LocciP. PerezJ. RanderJ.-f. RenardyA. RosowskyP. SaegerA. TrabelsiB. TuchmingB. VallageS.n. BlackJ.h. DannC. LoomisH.y. KimN. KonstantinidisA.m. LitkeM.a. McneilG. TaylorC.n. BoothS. CartwrightF. CombleyP.n. HodgsonM. LehtoL.f. ThompsonK. AffholderbachA. BöhrerS. BrandtC. GrupenJ. HessA. MisiejukG. PrangeU. SielerG. GianniniB. GobboJ. PutzJ. RothbergS. WasserbaechR.w. WilliamsS.r. ArmstrongP. ElmerD.p.s. FergusonY. GaoS. GonzálezO.j. HayesH. HuS. JinJ. KileP.a. Mcnamara IiiJ. NielsenW. OrejudosY.b. PanY. SaadiI.j. ScottJ. WalshJ.h. Von Wimmersperg-toellerSau Lan WuX. WuG. Zobernigsubject
Nuclear physicsPhysicsNuclear and High Energy PhysicsAlephParticle physicsBranching fractionCabibbo–Kobayashi–Maskawa matrixElectron–positron annihilationHadronCharm (quantum number)Particle Physics - ExperimentProduction rateCharm quarkdescription
Abstract The inclusive charm production rate in W decays is measured from a study of the properties of final state particles. The sample of W pairs is selected from 67.7 pb−1 collected by ALEPH in 1996 and 1997 at centre-of-mass energies near 172 and 183 GeV in the channels W+W−→4q and W + W − →lνq q . The branching fraction of hadronic W decays to a final state containing a c quark, RWc= Γ(W→cX)/Γ(W→hadrons), is measured to be 0.51±0.05stat±0.03syst. This allows a direct determination of the CKM matrix element |Vcs|=1.00±0.11stat±0.07syst.
year | journal | country | edition | language |
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1999-09-08 |