6533b7dcfe1ef96bd1271dfb

RESEARCH PRODUCT

Measurement of the Inclusive Charmless Semileptonic Branching Ratio ofBMesons and Determination of|Vub|

Stephane T'jampensD. LavinJ. P. LeesJohn BackD. S. BestR. FreyA. M. EisnerHui LiL. TantotM. H. KelseyT. R. McmahonSergio GrancagnoloT. AbeG. Hamel De MonchenaultR. S. PanviniP. F. HarrisonM. BondioliJ. R. JohnsonDouglas WrightR. CowanD. FalciaiA. V. TelnovR. BartoldusM. V. PurohitZongfu YuD. Del ReU. LangeneggerC. T. PotterM. CarpinelliLydia RoosM. MorgantiJ. A. NashM. Lo VetereM. M. MacriA. JawaheryBruce SchummG. CibinettoCatherine Kirsty MackayM. PelizaeusF. BelliniE. P. SolodovE. W. VarnesMario GiorgiP. A. HartI. NarskyA. LuJohn AllisonAjit MohapatraS. WillocqS. MorgantiSridhara DasuP. D. JacksonR. L. FlackR. K. YamamotoA. P. OnuchinS. EmeryHerbert KochG. Della RiccaPatrick RobbeD. ThiessenC. A. HeuschTeresa BarillariJ. M. RoneyLuca ListaL. BosisioDavide PiccoloM. G. GreenG. KukartsevP. J. OddoneMaria Roberta MongeA. MihalyiJ. A. MckennaE. PaoloniU. SchwankeP.b. VidalJ. L. RitchieE. A. KravchenkoV. B. GolubevJ. StarkJ. H. Von Wimmersperg-toellerJ. M. BauerS. McmahonC. DallapiccolaC. L. BrownI. EschrichH. HuY. KaryotakisM. S. GillD. J. KnowlesY. B. PanR. KowalewskiAndrei GritsanA. J.r. WeinsteinH. R. BandR. E. SchmitzC. De La VaissiereVladimir IvanchenkoM.l. AspinwallP. SandersC. VociJ. G. SmithC. P. JessopR. C. PennyA. W. WeidemannV. E. OzcanMatteo RamaD. J.j. MangeolM. DavierS. F. GanzhurCrisostomo SciaccaD. AstonN. K. WatsonB. BrauP. C. BloomI. KitayamaS. I. SerednyakovF. JacksonS. PrellW. S. LockmanC. HastR. W. KadelA. PalanoMaurizio PieriniMarie Helene SchuneT. ColbergH. W. ZhaoP. D. DaunceyPaul KyberdP. PatteriI. OfteG. MancinelliG. J. GrenierJ. F. KralMirco AndreottiH. P. PaarJ. E. BrauA. N. YushkovJames H CochranN. De GrootH. K. HadavandG. S. AbramsB. LewandowskiC. H. ChengS. PetrakA. SofferU. EgedeValerio ReM. R. ConveryG. SchottC. T. DayE. MalyG. CavotoG. CavotoG. VuagninA. HöckerC. YecheC. M. HawkesF. BucciF. AnulliG. SciollaG. W. MortonR. AleksanJ. W. BerryhillF. GalloJ. R. FryF. X. YumicevaJ. ZhangC. K. LaeG. BlaylockT. BrandtR. StroiliH. A. NealN. KuznetsovaK. T. FloodM. TurriG. RizzoN. R. BarlowCorrado AngeliniAmir FarbinK. GoetzenA. A. SalnikovN. A. RoeJ. L. HartonJ.m. GaillardA. RydV. E. BlinovA. GaidotM. L. PerlMaddie Mc KayAlessio SartiJ. T. BoydJoseph IzenO. L. BuchmuellerK. E. FordP. J. ClarkPierluigi PaolucciPeter ElmerOwen Rosser LongR. De SangroS. L. WuA. SeidenT. SchalkN. DanielsonG. P. TaylorA. K. MckemeyV. G. ShelkovG. WagnerG. P. GopalA. ZalloT. C. PetersenK. PetersF. ColecchiaC. BozziM. J.j. JohnW. C. Van HoekG. LynchE. TorrenceS. BaileyM. A. WinterM. VerderiJ. A. ErnstRoberto CalabreseY. I. SkovpenW. H. TokiM. A. MazzoniG. WormserF. GaleazziM. K. SullivanA. BuzzoS. J. LeeT. HadigR. J. BarlowG. CrosettiG. De NardoM. SteinkeR. MessnerA. M. EichenbaumP. DavidG. RongV. EschenburgLijun ZhangT. HuH. MarsiskeC. GattoN. ChevalierM. PosoccoC. LuD. JuddM. DattaN. I. GeddesF. Di LodovicoTe LathamE. TreadwellWouter VerkerkeA. J. LyonSai-juan ChenA. RoodmanBernard AubertT. PulliamC. ThiebauxH. StaengleEnrico RobuttiJ. OcarizF. BlancM. PivkD. J. PayneU. NauenbergSven MenkeRoland WaldiEleonora LuppiP. TarasU. MallikPierre-francois GiraudA. SantroniG. EigenF. Safai TehraniS. GeorgeJ. BroseO. HamonD. W. G. S. LeithA. M. LutzW. J. WisniewskiW. N. CottinghamS. LaplaceT. J. HarrisonF. FerroniA. CalcaterraW. DunwoodieD. A. BowermanA. SamuelM. GasperoB. FranekSilvano TosiS. PassaggioJ. P. ColemanR. J. SloaneJustin AlbertC. RoatA. SohaG. CalderiniS. JayatillekeC. E. MarkerJ. Va'vraG. TiozzoD. P. StokerP. M. PatelA. RomosanStephen Robert WagnerV. BrigljevićA. LazzaroD. SuG. P. Dubois-felsmannMathieu LangerE. I. RosenbergJ.h. PanettaNicola CavalloNicola CavalloJ.j. ReidyL. Del BuonoK. R. SchubertF. SandrelliR. EckmannL. WildenMatteo NegriniMarcello RotondoH. U. FlaecherA. ZghicheE. Grauges-pousM. PiccoloM. PripsteinR. J. WilsonL. M. CremaldiS. DittongoC. LeclercJ. RoyG. BatignaniS. J. SekulaR. PrepostE. O. OlaiyaP.f. ManfrediMauro MorandinW. T. FordTim AdyeM. MandelkernR. NogowskiJ.h. WeatherallF. PalomboVivek SharmaJames D. OlsenJ. M. LoseccoJ.e. SwainS. YangD. G. HitlinA. J. BevanF. MuheimP. RankinS. YeFrancesco FabozziFrancesco FabozziG. VasileiadisP. StrotherC. D. BuchananNicolas BergerA. J. EdwardsN. B. SinevA. HicheurA. B. BreonNicola NeriS. M. SpanierR. LiuLluisa-maria MirHyun-chul KimA. HaukeA. OlivasM. WeaverW. KozaneckiM. T. RonanR. Baldini-ferroliR. S. DubitzkyW. BhimjiD. KirkbyG. VasseurH. NicholsonM. E. LeviMartino MargoniJ. StelzerB. T. MeadowsG. RavenJ. I. YiM. D. SokoloffC. M. BrownM. SaleemP. R. BurchatS. RicciardiAlexis PompiliTetiana Hryn'ovaS. SaremiV. MiftakovA. J.s. SmithM. G. WilsonD. A. RobertsF.c. PastoreF. E. TaylorG. GrosdidierT. GlanzmanR. F. SchwittersD. B. MacfarlaneF. BrochardS. S. HertzbachY. GroysmanB. N. RatcliffN. D. QiR. SchwierzM. L. KocianKazuo AbeC. C. YoungR. ContriW. T. MeyerR. R. KoflerM. KrishnamurthyD. E. WagonerC. BoreanS. OttoJ. W. LamsaGabriele SimiB. SpaanH. BriandA. D. BukinL. LanceriC. L. DavisR. GametR. C. FieldF. SalvatoreM. HaireJ. C. WilliamsG. FinocchiaroV. LuthM. S. AlamA. SnyderV. LepeltierM. BenayounG. VaitsasB. DahmesA. W. BorglandF. SimonettoR. H. SchindlerS. BettariniR. KroegerD. BoutignyClaudio CampagnariA. T. WatsonC. HeartyD. J. SummersAlessandra FortiA. PerazzoM. MilekC. VoenaF. FortiL. VitaleF. Martinez-vidalF. Martinez-vidalDominik MüllerStéphane PlaszczynskiJ. BeringerR. GodangT. B. MooreH. M. LackerWolfgang WalkowiakH. L. LynchToyoko OrimotoM. P. KellyD. M. StromH. A. TanakaS. PlayferC. P. O'gradyE. CharlesD. BettoniAkram KhanM. A. BaakS. LuitzD. C. WilliamsM. ChaoT. I. MeyerT. S. MattisonD. A. SandersD. J. LangeG. PireddaA. DvoretskiiJ. C. ChenM. MoriiR. G. JacobsenF. R. WapplerV. B. KoptchevH. W. ShorthouseS. AhmedD. GambaSh. RahatlouV. LillardT. DeppermannStephen GowdyR. BarateSw. BanerjeeS. E. MorganM. DickoppJ. SchwieningT. Cuhadar-donszelmannH. B. CrawleyX. C. LouC. TouramanisJ. J. WalshS. ChristD. N. BrownE. ChenQ. H. GuoB. StuguW. RoethelD. DujmicH. SchmueckerL. PiemonteseG. D. LaffertyJ. ChauveauG. MarchioriE. GabathulerW. R. InnesF. C. PorterA. KurupP. KimDenis BernardT. A. GabrielD. DongM. ZitoY. S. ZhuS. H. RobertsonJohann Cohen-tanugiR. K. MommsenS. L. LevyG. W. LondonK. PaickA. DorigoJ. TinslayJunjie WuM. A. MazurR. J. ParryV. HalyoL. GladneyD. H. WrightC. PatrignaniV. TisserandR. FacciniR. FacciniJ. A. KadykF. FerrarottoA. J. LankfordF. Le DiberderS. M. XellaC. CartaroMarcella BonaJ. Button-shaferY. G. KolomenskyJ. D. RichmanW. A. WenzelD. FortinL. T. KerthD.p. CoupalG. A. CowanW. M. BuggD. KovalskyiAlberto LusianiRobert N. CahnFergus WilsonP. PoropatI. M. PeruzziT. W. BeckF. BianchiD. D. BrownPu WangRalph Müller-pfefferkornG. R. BonneaudJ. DorfanA. M. BoyarskiE. J. HillP. E. KutterPh LerusteD. D. AltenburgB. Mayer

subject

PhysicsHigh energyParticle physics010308 nuclear & particles physicsBranching fractionElectron–positron annihilationHadronGeneral Physics and Astronomy01 natural sciencesNuclear physics0103 physical sciencesMass spectrumMatrix elementB meson010306 general physicsLepton

description

We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 x 10(6) (-)BB events recorded with the BABAR detector at the Upsilon(4S) resonance. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other B meson. The number of signal events is extracted from the mass distribution of the hadronic system accompanying the lepton and is used to determine the ratio of branching fractions B((-)B-->X(u)lnu;)/B((-)B-->Xlnu;)=[2.06+/-0.25(stat)+/-0.23(syst)+/-0.36(theo)]x10(-2). Using the measured branching fraction for inclusive semileptonic B decays, we find B((-)B-->X(u)lnu;)=[2.24+/-0.27(stat)+/-0.26(syst)+/-0.39(theo)]x10(-3) and derive the Cabibbo-Kobayashi-Maskawa matrix element |V(ub)|=[4.62+/-0.28(stat)+/-0.27(syst)+/-0.48(theo)]x10(-3).

https://doi.org/10.1103/physrevlett.92.071802