6533b81ffe1ef96bd1279084

RESEARCH PRODUCT

J / psi production in the hadronic decays of the Z.

F. StichelbautR. Mc KayA. AndreazzaR. KeranenFrancisco MatorrasD. Souza-santosMarc WinterH. WahlenJ. BjarneB. TomeH. BriandP. AntilogusJ. H. KoehneF. HahnV. Ruhlmann-kleiderK. H. BecksE. VallazzaF. SimonettoJ. J. HernandezT. TodorovM. WielersT. TabarelliG. LederJ. P. GerberH. FoethO. PodobrinE. LiebG. ValentiA. Lopez-fernandezA. PasseriTord EkelofDietrich LikoA. G. FrodesenPierre JuillotB. KoeneB. ÅSmanFernand GrardFernand GrardD. CrennellF. MandlR. J. ApsimonJ. BlockiT. L. HessingB. UeberschaerA. KlovningU. MjoernmarkC. BosioP. H. KramerTiziano RovelliM. L. TurluerD. ReidA. G. OlshevskiF. PierreS. BraibantS. BraibantA. FirestoneKlaus HamacherTuure TuuvaClara TronconH. StaeckH. T. PhillipsVladimir CindroJosef StraussM. VoutilainenD. EdsallH. RahmaniG. WormserD. FassouliotisPierre BilloirD. GillespieChariclia PetridouChariclia PetridouF. LedroitP. DelpierreE. DaubieE. DaubieA. BuysG. GrosdidierPaolo MorettiniK. StepaniakJacques LemonneJacques LemonneJ. G. LokenD. J. HolthuizenM. RealeJ. DolbeauV. ChabaudM. Espirito SantoW. VenusZ. HajdukR. A. BrennerM. BattagliaO. UllalandDaniel TreilleM. BigiP. VazA. De AngelisP. CollinsG. MyattC. De Saint-jeanP. BeilliereH. FurstenauStefano RagazziLeif J. JönssonR. NicolaidouP.s.l. BoothGianni ZumerleI. KronkvistMaciej GórskiG. SmadjaJ. Van EldikDaniel BlochVincent HedbergJ. RidkyAlessandra RomeroY. SacquinA. RuizF. DupontAndrey KorytovJ. M. LevyB. LoerstadAhmimed OuraouV.m. GolovatyukF. ZachW. NeumannP. CarrilhoAndrei NomerotskiP. JalochaM. DavenportA. HakanssonJ. L. FoussetTiziano CamporesiT. S. HillS. J. AlvsvaagE. AgasiM. A E SchynsI. LippiM. ChapkinStefan SchaelA. N. SisakianA. DaumG. EkspongM. VollmerP. J. HoltN. G. RedaelliMarco BozzoP. PaganiniP. FrenkielP. PoropatP. PoropatMaria Roberta MongeStanislav NemecekP. F. HonoreB. FranekAndromachi TsirouE.n. TsyganovJ. H. WickensJ. H. WickensMarco PaganoniR. MoellerW. HaoWolfgang AdamA. ZalewskaVaclav VrbaF. FormentiL. Di CiaccioNikita SmirnovJose Luis ContrerasAndre AugustinusA. WehrF. CaoF. CaoL. K. ResvanisB. GolobO. BarringG. MatthiaeA. BaroncelliG. W. Van ApeldoornM. BerggrenP. V. ChliapnikovW. T. MeyerDenis GeléJan KrolikowskiN. N. KhovanskiW. BartlF. CarenaJ. StraverR. CasesF. WaldnerF. WaldnerP. AbreuG. BorisovJ. T.m. ChrinM. MichelottoRobert S. BrownT. BuranMarkus ElsingMassimo CacciaG. CosmeP. N. RatoffJ. BaudotHans DijkstraP. PriviteraM. BaubillierJ. A. Valls FerrerLuc PapeJ. DahmV. CanaleP. Van DamPiotr ZalewskiL. VenturaK. YipR. LindnerY. LemoigneI. A. TyapkinC. Vander VeldeC. Vander VeldeY. DufourSandor CzellarPaolo GiacomelliC. WalckA. NormandAriella CattaiB. DalmagneA. Koch-mehrinG. VegniLucio CerritoJ.d. RichardsonR. ZuberiA. KatarginMogens DamA. M. ZaitsevAlexander VodopyanovC. De La VaissiereD. VilanovaOlga BotnerC. KreuterR. HenriquesMariusz WitekF. BianchiJuan Abel BarrioJ. P. LaugierF. DjamaG. A. ChelkovS. SimonettiM. WeierstallLaurent MirabitoRichard JacobssonG. TranstromerMatteo PegoraroAndrea PerrottaP. N. BogolubovChristine KourkoumelisC. LambropoulosUgo AmaldiThemistocles BowcockL. VitaleL. VitaleA. PetroliniB. De LottoB. De LottoCarmen GarcíaG. CrosettiEvgueni VlasovV. NikolaenkoRupert LeitnerG. PianaW. De BoerPatrick JarryE. ZevgolatakosG. PolokM. PimentaB. A. KhomenkoE. Dahl-jensenA. TilquinJ. ChauveauG. RinaudoJ. SaltM. PernickaE. KarvelasZ. D. ThoméA. De MinM. BegalliBarry KingI. SiccamaMilos LokajicekE. SpiritiN. ErshaidatImad Baptiste LaktinehA. FerrerS. SquarciaA. StocchiFrancesco NavarriaH. SaarikkoG. SajotJesus MarcoG. LenzenH. HerrL. G. TkatchevD. RadojicicT. SpassovA. MaioK. D. BrandM. ZitoJ. A. HernandoJ. J. Gomez Y CadenasR. FrühwirthJ. TimmermansR. StrubG. SciollaA. SeitzR. PainJ. Cuevas MaestroA. TomaradzeA. TomaradzeS. UeberschaerF. Martinez-vidalV. KostioukhineM. KoratzinosS. MartiJ. PennanenP. B. RentonA. ChanN. I. ZiminW.s.c. WilliamsD. C. FriesO. SmirnovaD. BertrandP. LangefeldA. MaltezosP. BruckmanT. MaronMario SanninoJ.-e. AugustinC. DefoixM. A. Lopez AgueraB. BouquetO. YushchenkoR. SekulinF. Fulda-quenzerE. CortinaC. BricmanC. BricmanB. MarechalV.a. UvarovL. GornMartino MargoniMarta CalviM. FeindtW. RuckstuhlR. Mc NultyP. NegriE. GrazianiH. De BoeckH. De BoeckM. TyndelGeoffrey SmithI. V. AjinenkoR. OravaE. FokitisE. I. RosenbergJ. M. BrunetA. LipniackaErnesto MiglioreT. MoaG. MaehlumH. PerneggerManfred KrammerP. LutzK. KurvinenP. BeltranJavier SánchezIvan MikulecL. TortoraF. J. HarrisGöran JarlskogP. NissM. VerlatoM. PrestM. PrestJ. MaillardM. MazzucatoL. BuggeW. D. ApelWilliam TrischukA. MarkouUgo GaspariniMaria Elena PolV. ChorowiczWinfried MitaroffA. J. Camacho RozasS. KatsanevasLouis LyonsWojciech KucewiczR. AleksanBorge Svane NielsenJ. J. LozanoD. Y. BardinM. KarlssonB. BoštjančičS. De BrabandereS. De BrabandereF. M. L. AlmeidaGuido BarbielliniGuido BarbielliniD. Z. ToetP. SiegristW. KrupinskiJ. GuyKrzysztof DorobaT. A. FilippasChiara MeroniJan BuytaertAllan HallgrenTim AdyeDemetrios LoukasP. RebecchiM. ReglerJ. GarciaPeter KluitG. D. AlekseevE. TorassaJ. N. JacksonH. J. HilkeB. Jean-marieChiara MariottiCarlos LacastaM. Mc CubbinK. HultqvistGeorgios StavropoulosR. EhretJ. RamesS. HahnFrancesca Romana CavalloI. RippV. ObraztsovU. HaedingerP. KokkiniasN. NeumeisterH. PalkaM. S. BilenkyL.j. CarrollLydia RoosC. Martinez-riveroJ. DreesI. RoncaglioloG. E. TheodosiouV. V. LapinJ. W. LamsaEvangelos GazisC. GasparH. MuellerJ. MedboL. ChaussardS. C. BlythG. WilkinsonC. De ClercqC. De ClercqM. BonesiniW. J. MurrayM. JonkerF. BaraoKathy HuetKathy HuetValeriy PozdniakovT. BologneseM.d.m. De Fez LasoW. BoniventoKerem CankocakMarcos DracosO.m. KouznetsovV. LepeltierPaolo ChecchiaF. CouchotPh. GavilletE. HigonR. SeufertM. KaiserS. BosworthClaire BourdariosF. ScuriF. ScuriP. WeilhammerT. LesiakE. K. JohanssonA. M. WetherellR. SosnowskiI. StavitskiPaul BaillonD. ZontarAlexander Lincoln ReadK. KulkaP. VincentSteinar StapnesF. NaraghiL. LanceriL. LanceriStéphane PlaszczynskiV. G. TimofeevM. SzeptyckaTh D. PapadopoulouPaolo RoncheseN. J. KjaerV. BocciG. TristramR. BarateG. E. KalmusS. O. HolmgrenL. S. VertogradovY. ArnoudR. C. ShellardA. M. SegarP. S. IversenF. FontanelliJ-c. MarinR. GokieliP. GunnarssonSpyros TzamariasO. TchikilevJ. P. EngelP. BambadePhillip AllportM. V. Castillo GimenezGuenakh MitselmakherPaul DaunceyN. DemariaG. DamgaardCristian StanescuP. BranchiniH. SchneiderR. LauhakangasPh. CharpentierM. SessaM. SessaM. DonszelmannDanilo ZavrtanikV. GraccoB. MurynP. HerquetP. HerquetR. ContriPavlos IoannouManolis DrisAlberto BenvenutiKlaus MoenigFabrizio ParodiM. A. HouldenJ. DaviesS. HaiderC. CasoH. B. CrawleyL. BrillaultW. Da SilvaW. K. Van DoninckW. K. Van DoninckF. RichardC. MatteuzziM. HahnS. AlmehedLuis PeraltaF. KapustaA. PulliaMarek SzczekowskiE. RossoH. KleinK. OsterbergM. LosM. Van Der HeijdenRobin CampionGary John BarkerK. WoschnaggE. C. KatsoufisG. GopalL. De PaulaP. RoudeauM. J. BatesToralf Bernhard SkaaliD. GambaF. VerbeureF. VerbeureB. StuguM. GandelmanJuan Fuster

subject

Nuclear and High Energy PhysicsParticle physicsMesonLUND MONTE-CARLO; B-MESON DECAYS; HEAVY-QUARKONIUM; JET FRAGMENTATION; TRANSITIONS; CHARMONIUM; PHYSICS; SYSTEMS; BOSONLUND MONTE-CARLOElectron–positron annihilationHadronTRANSITIONSAstrophysics::Cosmology and Extragalactic AstrophysicsB meson01 natural sciencesb taggingJET FRAGMENTATIONPartícules (Física nuclear)law.inventionNuclear physicsPHYSICSB-MESON DECAYSlawSYSTEMSCHARMONIUM0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]B mesonNuclear Experiment010306 general physicsColliderBosonDELPHIHEAVY-QUARKONIUMPhysics010308 nuclear & particles physicsPhysicsHigh Energy Physics::PhenomenologyZ0 decayBOSONb-taggingHigh Energy Physics::ExperimentDELPHI; B meson; b tagging; Z0 decayParticle Physics - Experiment

description

Abstract: J/psi mesons have been reconstructed from their decay to mu(+)mu(-) and e(+)e(-), using the data collected by the DELPHI experiment during 1991 and 1992 at the LEP collider. From about 1 million hadronic Z decays 153 +/- 17 J/psi were found, 5.4 +/- 2.3 psi' were obtained in the channel J/psi(--> mu(+)mu(-))pi(+)pi(-) and 6.4 +/- 2.7 chi(c) in the channel J/psi(--> mu(+)mu(-))gamma. As the dominant source of J/psi mesons is from b quarks, the following branching ratios: Br(b-->J/psi X) = (1.12 +/- 0.12 (stat.) +/- 0.10 (syst.))%, Br(b --> psi' X) = (0.48 +/- 0.22 (stat.) +/- 0.10 (syst.))%, Br(b-->chi(cl) X) = (1.4 +/- 0.6 (stat.)(-0.2)(+0.4) (syst.))% were measured. From the proper time distribution of the J/psi sample, the average lifetime of b-hadrons decaying into J/psi was found to be: tau(B) = 1.50(-0.21)(+0.24) (stat.) +/- 0.03 (syst.) ps. A search for completely reconstructed B meson decays to final states including a J/psi gave a signal of 15 +/- 5 events.

http://hdl.handle.net/2318/115696