6533b872fe1ef96bd12d3b2f

RESEARCH PRODUCT

MEASUREMENT OF THE GAMMA(B-B-OVER-BAR)/GAMMA(HAD) BRANCHING RATIO OF THE Z BY DOUBLE HEMISPHERE TAGGING

A. PasseriG. ValentiO. PodobrinE. K. JohanssonF. PierreR. HenriquesMariusz WitekSteinar StapnesP. VazVincent HedbergG. SmadjaJ. Van EldikRupert LeitnerG. PianaV. RonjinKlaus HamacherF. SimonettoG. MatthiaeHeinz PerneggerR. A. BrennerT. S. HillG. EkspongS. J. AlvsvaagE. AgasiG. LederStefan SchaelA. DaumA. MaioB. ÅSmanS. MartiPiotr ZalewskiA. Koch-mehrinP. N. RatoffS. SimonettiD. CrennellV.a. UvarovB. GolobPatrick JarryG. RinaudoM. BegalliMogens DamT. BuranMarkus ElsingJorge-armando Benitez GarciaF. StichelbautR. Mc KayJ. SaltJ. A. HernandoB. DalmagneA. G. FrodesenA. De MinI. SiccamaG. SajotJ. J. Gomez Y CadenasG. W. Van ApeldoornR. PainS. UeberschaerO. SmirnovaA. MaltezosR. ZuberiOlga BotnerTiziano RovelliA. AndreazzaJ. BlockiL. VenturaK. YipR. LindnerY. LemoigneJ. P. EngelM. V. Castillo GimenezM. PimentaB. A. KhomenkoP. CarrilhoJ. J. HernandezG. TranstromerCarmen GarcíaMilos LokajicekB. KoeneM. VerlatoF. CarenaChiara MariottiJ. N. JacksonG. WormserJ. RamesP. KokkiniasG. BorisovM. BaubillierAchille StocchiZ. HajdukD. J. HolthuizenP. DelpierreE. DaubieL. BuggeA. J. Camacho RozasM. WeierstallG. MyattFrancesco NavarriaLuis PeraltaF. KapustaS. HahnD. VilanovaD. Z. ToetP. SiegristG. D. AlekseevE. TorassaP. HerquetPaul DaunceyN. DemariaG. DamgaardR. MoellerA. M. ZaitsevAlexander VodopyanovR. CasesP. AbreuF. BianchiV. NikolaenkoMaciej GórskiY. SacquinR. KeranenL. K. ResvanisFrancisco MatorrasD. GeleFrancesca Romana CavalloR. ContriMassimo CacciaW. KrupinskiP. N. BogolubovChristine KourkoumelisI. LippiJ-c. MarinR. GokieliE.n. TsyganovJ. H. WickensL. TortoraF. J. HarrisP. JuillotPaolo MorettiniJ. G. LokenI. RippP. LangefeldC. De Saint-jeanP. BeilliereP. H. KramerB. MurynMarco PaganoniA. HakanssonJose Luis ContrerasM. PernickaWolfgang AdamT. MaronE. Dahl-jensenH. J. HilkeP. GunnarssonSpyros TzamariasO. TchikilevE. I. RosenbergManolis DrisV. GraccoCarlos LacastaMario SanninoA. PulliaV. V. LapinA. FirestonePavlos IoannouLouis LyonsR. AleksanPierre BilloirE. KarvelasJesus MarcoG. LenzenR. StrubJuan Abel BarrioJ. Cuevas MaestroF. Martinez-vidalV. KostioukhineM. KoratzinosC. De ClercqL. GornJ. P. GerberYu. BelokopytovP. RoudeauW. HaoO. BarringP. V. ChliapnikovA. G. OlshevskiK. StepaniakH. FurstenauC. DefoixW. KucewiczF. Fulda-quenzerW. J. MurrayT. TodorovL. VitaleL. VitaleM. WielersK. KurvinenM. Mc CubbinK. HultqvistM. DavenportMarc WinterJavier SánchezIvan MikulecC. Martinez-riveroLuc PapeJ.d. RichardsonRichard JacobssonA. BuysA. PetroliniKlaus MönigFabrizio ParodiVaclav VrbaM. A. HouldenP. B. RentonDietrich LikoP. PriviteraG. VegniE. GrazianiMaria Roberta MongeA. ZalewskaD. GillespieChariclia PetridouChariclia PetridouJ. M. BrunetH. FoethM. L. TurluerD. ReidD. RadojicicM. BattagliaD. Douza-santosR. J. ApsimonH. WahlenD. C. FriesAlberto BenvenutiJ. DaviesGeorgios StavropoulosW. T. MeyerJ. H. KoehneAndrea PerrottaB. De LottoB. De LottoW. NeumannG. CrosettiEvgueni VlasovDemetrios LoukasHans DijkstraH. BriandM. RealeDaniel TreilleM. BigiT. L. HessingB. UeberschaerGianni ZumerleA. BaroncelliImad Baptiste LaktinehP. Van DamS. SquarciaA. De AngelisV. Ruhlmann-kleiderMarek SzczekowskiP. PoropatP. PoropatR. LauhakangasPh. CharpentierY. DufourM. VollmerTord EkelofH. StaeckB. MarechalR. SosnowskiE. C. KatsoufisP. CollinsK. H. BecksJacques LemonneE. VallazzaPaolo GiacomelliS. O. HolmgrenL. S. VertogradovSandor CzellarH. HerrL. G. TkatchevH. SaarikkoC. GasparJ. E. AugustinJ. RidkyAndromachi TsirouDaniel BlochMarta CalviAndre AugustinusA. WehrA. Lopez-fernandezK. KulkaP. VincentF. NaraghiV. G. TimofeevG. PolokM. JonkerC. De La VaissiereE. RossoH. KleinA. KlovningVincenzo CanaleM. SessaM. SessaGeoffrey SmithY. ArnoudU. MjoernmarkC. BosioJ. DolbeauLaurent MirabitoAhmimed OuraouV.m. GolovatyukD. BertrandK. OsterbergP. LutzP. BambadeA. SeitzR. Mc NultyA. B. FenyukM. BerggrenT. TabarelliNikita SmirnovF. CouchotStefano RagazziJ. BjarneH. De BoeckP. RebecchiErnesto MiglioreS. HaiderM. ZitoM. LosM. J. BatesP.s.l. BoothB. Jean-marieM. TyndelB. TomeB. LoerstadR. C. ShellardL. Di CiaccioJosef HrubecThemistocles BowcockE. CortinaA. TilquinO.m. KouznetsovV. LepeltierJ. M. LevyE. LiebH. RahmaniM. FeindtP. NegriG. E. TheodosiouP. AntilogusF. FormentiF. CaoD. FassouliotisW. RuckstuhlAriella CattaiH. T. PhillipsVladimir CindroTuure TuuvaM. DonszelmannPaolo ChecchiaPh. GavilletM. VoutilainenD. EdsallG. GrosdidierS. C. BlythDanilo ZavrtanikToralf Bernhard SkaaliT. SpassovC. CasoClara TronconD. GambaJ. MaillardA. M. SegarG. WilkinsonM.d.m. De Fez LasoF. HahnA. ChanW.s.c. WilliamsM. KaiserO. YushchenkoF. LedroitGöran JarlskogR. SekulinPawel JalochaBarry KingO. UllalandP. S. IversenF. FontanelliM. PrestM. PrestE. SpiritiLeif J. JönssonAlessandra RomeroA. RuizM. A E SchynsAllan HallgrenF. VerbeureP. BeltranLucio CerritoCharles BricmanV. ChorowiczB. StuguF. DupontAndrey KorytovW. D. ApelF. ZachClaire BourdariosP. PaganiniAndrei NomerotskiR. FrühwirthN. ErshaidatJ. TimmermansA. FerrerV. BocciA. TomaradzeP. F. HonoreM. GandelmanB. BoštjančičV. PerevozchikovI. StavitskiM. S. BilenkyTiziano CamporesiU. HaedingerG. CosmeT. MoaG. MaehlumL.j. CarrollPaul BaillonPhillip AllportMartino MargoniE. FokitisA. LipniackaD. ZontarAlexander Lincoln ReadM. SzeptyckaJuan FusterJan KrolikowskiN. N. KhovanskiH. B. CrawleyP. J. HoltN. G. RedaelliRobert S. BrownP. NissW. BartlT. A. FillippasStanislav NemecekM. Van Der HeijdenMarco BozzoZ.d. ThomeB. FranekJ. A. Valls FerrerM. MazzucatoPaolo RoncheseTh. D. PapadopoulouGuenakh MitselmakherRobin CampionL. BrillaultP. FrenkielJ. P. LaugierJ. StraverF. WaldnerF. WaldnerJ. BaudotFares DjamaN. J. KjaerUgo GaspariniC. WalckJ. L. FoussetJ. MedboGary John BarkerW. Da SilvaW. A. MitaroffA. NormandK. D. BrandJ. PennanenN. I. ZiminK. WoschnaggA. MarkouJ. DahmF. M. L. AlmeidaGuido BarbielliniGuido BarbielliniP. WeilhammerG. GopalJ. GuyC. Vander VeldeL. De PaulaMatteo PegoraroG. TristramTim AdyeF. RichardCristian StanescuP. BranchiniC. MatteuzziBorge Svane NielsenJ. J. LozanoM. HahnS. De BrabandereG. A. ChelkovH. SchneiderS. AlmehedKrzysztof DorobaChiara MeroniJan BuytaertR. BarateG. E. KalmusP. BruckmanPeter KluitH. PalkaC. LambropoulosUgo AmaldiW. De BoerJ. W. LamsaE. ZevgolatakosF. BaraoE. HigonR. SeufertS. BosworthG. SciollaF. ScuriF. ScuriA. M. WetherellT. LesiakL. LanceriL. LanceriStéphane PlaszczynskiW. Van DoninckV. ObraztsovI. RoncaglioloM. A. Lopez AgueraR. OravaFernand GrardB. BouquetMaria Elena PolS. KatsanevasD. Y. BardinM. KarlssonM. ReglerR. EhretH. MuellerM. BonesiniKathy HuetValeriy PozdniakovT. BologneseW. BoniventoKerem CankocakJosef StraussS. BraibantV. ChabaudM. Espirito SantoW. VenusR. NicolaidouI. KronkvistJ. ChauveauA. N. SisakianI. A. TyapkinManfred KrammerJ. T.m. ChrinM. MichelottoI. V. AjinenkoC. KreuterLydia RoosJ. DreesEvangelos GazisM. DracosL. ChaussardNorbert Neumeister

subject

Particle physicsPhysics and Astronomy (miscellaneous)LUND MONTE-CARLOB-HADRONSElectron–positron annihilationHadronElementary particle01 natural sciencesPartícules (Física nuclear)b taggingJET FRAGMENTATIONNuclear physics0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicsEngineering (miscellaneous)Detectors de radiacióDELPHIPhysicsE+E-PHYSICS010308 nuclear & particles physicsBranching fractionDetectormicrovertex detectorLUND MONTE-CARLO; JET FRAGMENTATION; HADRONIC DECAYS; E+E-PHYSICS; B-HADRONSb-taggingParticle accelerationDELPHI; microvertex detector; b taggingHADRONIC DECAYSParticle Physics - Experiment

description

Two measurements of {Mathematical expression} are presented. Both measurements use 250000 Z decays taken with the DELPHI detector in 1991 and rely mainly on the precision of the microvertex detector. One tagging method is as simple as possible so that background rates can be reliably predicted by simulation. The other one uses a more involved tagging technique and reduces the dependence on simulation as much as possible. Combining both results, {Mathematical expression} is found to be 0.2209±0.0041(stat.)±0.0042(syst.)±0.0018 {Mathematical expression}. © 1995 Springer-Verlag.

yearjournalcountryeditionlanguage
1995-01-01
10.1007/bf01578666http://hdl.handle.net/11577/2501026