6533b820fe1ef96bd1279179
RESEARCH PRODUCT
A study of D*+π- production in semileptonic B decay
Damir BuskulicDavid William CasperI De BonisD DécampP GhezC GoyJ P LeesM N MinardP OdierB PietrzykF AriztizabalM ChmeissaniJ M CrespoI EfthymiopoulosE FernándezM Fernández-bosmanV GaitanL GarridoM MartínezS OrteuA PachecoC PadillaFabrizio PallaA PascualJ A PerlasF SánchezF TeubertD CreanzaM De PalmaA FarillaGiuseppe IaselliG MaggiN MarinelliS NataliS NuzzoA RanieriG RasoF RomanoF RuggieriG SelvaggiL SilvestrisP TempestaG ZitoX HuangJ LinQ OuyangT WangY XieR XuS XueJ ZhangL ZhangW ZhaoG BonviciniP ComasP CoyleH DrevermannA EngelhardtRoger W FortyM FrankG GanisC GayM GironeR HagelbergJ HarveyR JacobsenB JostJ KnoblochIvan LehrausM MaggiC MarkouE B MartinP MatoH MeinhardAdolf G MintenR MiquelP PalazziJ R PaterP PerrodoJ F PusztaszeriF RanjardLuigi RolandiW D SchlatterM SchmellingW TejessyI R TomalinR VeenhofA VenturiH W WachsmuthW WiedenmannW WitzelingJ WotschackZiad J AjaltouniMaria Bardadin-otwinowskaA BarrèsC BoyerA FalvardP GayC GuicheneyP HenrardJ JoussetB MichelS MonteilJ C MontretD PallinP PerretF PodlyskiJ ProriolJ M RossignolF SaadiTom FearnleyJ B HansenJ D HansenJ R HansenP H HansenS D JohnsonR MøllerudB S NilssonA KyriakisErrietta SimopoulouI SiotisAnna VayakiK ZachariadouA BlondelG R BonneaudJ C BrientP BourdonL PassalacquaA RougéM RumpfR TanakaAndrea ValassiM VerderiH L VideauD J CandlinM I ParsonsE VeitchE FocardiG ParriniM CordenM C DelfinoC H GeorgiopoulosD E JaffeA AntonelliG BencivenniG BolognaF BossiP CampanaG CaponF CeruttiV ChiarellaG FeliciP LaurelliG MannocchiF MurtasG P MurtasM Pepé-altarelliS SalomoneP ColrainI Ten HaveI G KnowlesJ G LynchW J MaitlandW T MortonC RaineP ReevesJ M ScarrK SmithM G SmithA S ThompsonS ThornR M TurnbullU BeckerO BraunC GewenigerG GraefeP HankeV HeppE E KlugeA PutzerB RenschM SchmidtJ SommerH StenzelK TittelM WunschR BeuselinckDavid M BinnieW CameronM CattaneoD J CollingPeter J DornanJ F HassardN P KonstantinidisL MonetaA MoutoussiJ NashD G PayneG San MartinJ K SedgbeerA G WrightG DissertoriP GirtlerE KneringerD KuhnG RudolphC K BowderyT J BrodbeckA J FinchF FosterG HughesD JacksonN R KeemerM NuttallA D PatelTerence SloanS W SnowE P WhelanA GallaA M GreeneK KleinknechtJ RaabB RenkH G SanderH SchmidtS M WaltherR WankeB WolfA M BencheikhC BenchoukA BonissentD CalvetJ CarrC A DiaconuF EtienneD NicodP PayreL RoosD RousseauM TalbyI AbtS AdlungR W AssmannC BauerWalter BlumD BrownPaolo Walter CattaneoBernd DehningH DietlFriedrich DydakA W HalleyK JakobsH KrohaJ LauberG LütjensGerhard LutzW MännerH G MoserR H RichterJ SchröderA S SchwarzRonald SettlesH C J SeywerdU StierlinU StieglerR Saint-denisG WolfR AlemanyJ BoucrotO CallotA CordierF CouraultM DavierL DuflotJ F GrivazP HeusseM JacquetP JanotD W KimF R Le DiberderJ LefrançoisA M LutzG MusolinoI A NikolicH J ParkI C ParkM H SchuneS SimionJ J VeilletI VideauD AbbaneoG BagliesiG BatignaniS BettariniU BottigliC BozziG CalderiniM CarpinelliM A CiocciV CiulliR Dell'orsoI FerranteF FidecaroL FoàF FortiA GiassiM A GiorgiA GregorioF LigabueA LusianiP S MarrocchesiA MessineoG RizzoG SanguinettiA SciabàP SpagnoloJack SteinbergerRoberto TenchiniG TonelliG TriggianiC VanniniP G VerdiniJ WalshA P BetteridgeG A BlairL M BryantY GaoM G GreenD L JohnsonT MedcalfL M MirJ A StrongV BertinDavid R BotterillR W ClifftT R EdgecockS HaywoodM EdwardsP MaleyP R NortonJ C ThompsonB Bloch-devauxP ColasH DuarteS EmeryWitold KozaneckiE LançonM C LemaireE LocciB MarxP PérezJ RanderJ F RenardyA RosowskyA RoussarieJ P SchullerJ SchwindlingD Si MohandA. TrabelsiB VallageR P JohnsonA M LitkeG TaylorJ WearA BeddallC N BoothC BoswellS L CartwrightF CombleyI DawsonA KöksalM LethoM W NewtonC RankinL F ThompsonA BöhrerS BrandtG D CowanE FeiglClaus GrupenG LuttersJ A Minguet-rodríguezF RiveraP SaraivaU SchäferL SmolikL BosisioR Della MarinaG GianniniB GobboL PitisF RagusaH KimJ E RothbergS R WasserbaechS R ArmstrongL BellantoniJ S ConwayP ElmerZ FengD P S FergusonY S GaoS GonzálezJ GrahlJ L HartonO J HayesH HuP A McnamaraJ M NachtmanW OrejudosPan Yi BinY SaadiM SchmittI ScottV SharmaJ TurkA M WalshF V WeberT WildishSau Lan WuX WuJ M YamartinoM ZhengG Zobernigsubject
Nuclear physicsPhysicsALEPH ExperimentNuclear and High Energy PhysicsALEPH Experiment; B mesonsBranching fractionPhysicsElectron–positron annihilationHadronAnalytical chemistryB mesonsParticle Physics - Experimentdescription
Abstract In a sample of 1.5 million hadronic decays of the Z collected by the ALEPH detector, a search is carried out for the decays B → D 1 0 (2420)l − ν X and B → D 2 ∗0 (2460)l − ν X . The product branching ratio for D10 production is measured to be Br (b → B ) × Br( B → D 1 0 l − ν X) × Br(D 1 0 → D ∗+ π − ) = (2.04 ± 0.58 stat ± 0.34 syst ) × 10 −3 , and a 95% confidence level limit of Br(b → B ) × Br( B → D 2 ∗0 l − ν X) × Br(D 2 ∗0 → D ∗+ π − ) ≤ 0.81 × 10 −3 is obtained for D2∗0 production. A topological search sensitive to the processes above, but also to wide resonances that decay to D ∗+ π − and to non-resonant D ∗+ π − production is also carried out, yielding Br(b→ B ) ×Br( B →D ∗+ π − l − ν X )= (3.7 ± 1.0 stat ± 0.7 syst ) × 10 −3 . Direct evidence of D∗π production inconsistent with D10 and D2∗0 in semileptonic B decay is presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-01-01 |