6533b837fe1ef96bd12a1f35
RESEARCH PRODUCT
Energy dependence of event shapes and of $\alpha_s$ at LEP 2
T. AllmendingerA. KiiskinenAttilio AndreazzaJ. M. LopezJ. LibbyOle RøhneM. PimentaB. A. KhomenkoSandra AmatoT. PodobnikT. PodobnikO. KouznetsovK. BelousJ. E. AugustinA. StocchiFrancesco NavarriaMaria Elena PolMaria Elena PolP. LangefeldS. KatsanevasA. SopczakMariusz WitekS. SquarciaM. GuntherH. SaarikkoD. Y. BardinE. K. JohanssonM. ReglerPaul BaillonRupert LeitnerG. MatthiaeF. J. HarrisF. TerranovaAlexander Lincoln ReadM. SzeptyckaMarc BesanconKonstantinos PapageorgiouR. LauhakangasM. VerlatoAndrea PerrottaM. ChapkinM. S. BilenkyN. VassilopoulosL.j. CarrollVaclav VrbaB. TomeP. AntilogusYu. SedykhHans DijkstraV. Ruhlmann-kleiderT. TabarelliJ. J. HernandezE. KriznicE. KriznicA. N. SisakianM. BerggrenU. MjoernmarkC. Vander VeldeC. Vander VeldeFabio CossuttiD. BertiniR. JacobssonR. Mc NultyP. DelpierreG. A. ChelkovA. SadovskyS. FichetS. TodorovaH. T. PhillipsV. MalychevUgo AmaldiIgor BoykoT. LesiakH. RahmaniAriella CattaiW. De BoerE. ZevgolatakosA. W. BorglandA. G. FrodesenDanilo ZavrtanikDanilo ZavrtanikR. GokieliR. GokieliE. G. AnassontzisJ. P. EngelP. BambadeM. V. Castillo GimenezG. MyattP. BruckmanF. LedroitJ. FusterJacques LemonneJacques LemonneG. ValentiS. CabreraD. FassouliotisF. PierreA. GalloniC. GasparVincent HedbergD. W. LaneG. EkspongR. MuresanF. SimonettoP. N. RatoffMattias EllertM. BegalliM. BegalliSofia AndringaN. TintiS. TzamariasN. I. ZiminN. I. ZiminK. MuenichWinfried MitaroffLouis LyonsS. O. HolmgrenL. S. VertogradovO. UllalandG. BorisovMaciej GórskiDemetrios LoukasL. GornL. GornG. J. HughesA. B. FenyukG. C. ZucchelliDenis GeléJ. DolbeauJ. YiI. Gonzalez CaballeroChiara MariottiS. HahnJ. W. LamsaA. DeghorainA. DeghorainE. HigonP. SeagerN. N. KhovanskiP.s.l. BoothV. LepeltierM. SiebelPaolo ChecchiaFrancesca Romana CavalloI. GilR. Lopez-fernandezR. C. ShellardR. C. ShellardJosef HrubecJ. P. LaugierM. BattagliaF. BaraoP. KubinecG. GrosdidierP. V. ChliapnikovG. CosmeA. TonazzoF. ScuriF. ScuriB. FranekA. M. SegarAlessandra RomeroA. RuizM. A E SchynsA. Van LysebettenA. Van LysebettenSandor CzellarG. LederM. GasparB. ÅSmanV. LefebureV. LefebureD. CrennellF. MandlY. BelokopytovK. CieslikPh. GavilletB. GolobB. GolobP. BuschmannB. MurynB. MurynR. Mc KayG. D. AlekseevN. NeumeisterY. ArnoudV. V. LapinRichard BrennerN. NeufeldG. VegniK. StevensonT. SpassovM. BaubillierV. CanaleJørgen Beck HansenA. M. ZaitsevAlexander VodopyanovF. BianchiV. GraccoG. PolokClara TronconYu. GouzB. Jean-marieLuca TortoraT. MyklebustP. HerquetP. HerquetR. ContriA. SheridanF. FontanelliE. Ferrer-ribasJ. H. CowellT. L. HessingKlaus HamacherX. MoreauS. GamblinJ. MacnaughtonClaire BourdariosC. BosioE. PiottoChristophe RoyonS. HoorelbekeS. HoorelbekeMario SanninoBorut Paul KerševanBorut Paul KerševanM. Mc CubbinK. HultqvistRafael MarcoJ. GrahlC. De ClercqC. De ClercqW. J. MurrayGareth J. BarkerT. BurgsmuellerNicola AmapaneP. KrsticL. Di CiaccioL. Di CiaccioJ. PalaciosManolis DrisV. ObraztsovM. A. BizouardErnesto MiglioreTord EkelofA. NormandKlaus MoenigJ. Cuevas MaestroI. A. TyapkinPaolo RoncheseFabrizio ParodiPiotr ZalewskiM. A. HouldenS. Marti I GarciaN. J. KjaerO. KlappR. StrubI. Van VulpenB. LoerstadWolfgang AdamAlberto BenvenutiB. BuschbeckD. VilanovaBorge Svane NielsenFabrizio FerroF. TegenfeldtJ-c. MarinB. ErzenB. ErzenKrzysztof DorobaI. LippiG. OraziR. KeranenPhilippe CharpentierFrancisco MatorrasChiara MeroniI. BozovicE. C. KatsoufisG. GopalMaarten BoonekampUgo GaspariniZ. AlbrechtNektarios BenekosJ. M. HeuserJ. H. WickensJ. H. WickensC. GreenP. GrisMarco PaganoniV.a. UvarovGunter WolfW. Da SilvaJ. MasikDimos SampsonidisPhillip AllportPeter KluitF. MazzucatoG. Della RiccaG. Della RiccaD. BertrandD. BertrandPh. SchwemlingO. YushchenkoR. SekulinT. MoaP. RebecchiJiri ChudobaR. SosnowskiV. ChabaudM. Espirito SantoL. De PaulaGuido BarbielliniGuido BarbielliniL. BuggeG. TristramE. FalkW. K. Van DoninckW. K. Van DoninckN. GhodbaneJ. DreesJ. GuyF. RichardP. ChochulaC. MatteuzziS. StanicS. StanicTh. D. PapadopoulouTh. D. PapadopoulouF. NaraghiOliver PassonA. KinvigM. DavenportP. RoudeauS. AlmehedE. CortinaTim AdyeJ. D. DurandEvangelos GazisR. ChiericiB. BouquetF. HahnA. G. OlshevskiJ. H. LopesU. ParzefallA. FirestoneL. VitaleL. VitaleTiziano CamporesiAntonios LeisosD. RadojicicChristopher ParkesM. NassiakouNikolaos P. MastroyiannopoulosGuillelmo Gomez-ceballosStefano RagazziV. NomokonovM. TrochimczukA. DuperrinG. MortonPaolo PriviteraM. NikolenkoMorgan LethuillierR. JanikA. ZalewskaU. SchwickerathH. PalkaT. AlderweireldT. AlderweireldGeorgios FanourakisL. ChaussardJ. N. JacksonM. BonesiniM. MazzucatoJ. R. MahonJ. R. MahonT. G M MalmgrenH. WahlenMatteo PegoraroPatrick JarryG. RinaudoJ. SaltR. PaivaMaria Roberta MongeC. Mulet-marquisManfred KrammerR. OravaP. LutzP. J. HoltS. HaiderAmelia MaioN. G. RedaelliC. VollmerCristian StanescuP. BranchiniMarco BozzoA. PasseriGuy WilkinsonD. GambaH. M. BlomA. FerrerA. TomaradzeA. TomaradzeOxana SmirnovaJuergen ThomasY. SacquinG. VoulgarisW. T. MeyerKathy HuetKathy HuetC. CasoP. KokkiniasMartijn MuldersT. BrenkeK. H. BecksValeriy PozdniakovR. AlemanyStanislav NemecekH. SchneiderT. BuranMarkus ElsingF. VerbeureF. VerbeureK. KarafasoulisH. J. GrimmN. PukhaevaPer JönssonM. MochMartino MargoniE. FokitisW. BoniventoE. VallazzaE. VallazzaH. B. CrawleyB. SchweringB. StuguM. L. TurluerD. ReidLaurent MirabitoV. VerziK. GrzelakU. MuellerAllan HallgrenM. GandelmanA. MarkouCorinne BeratOlga BotnerAntonio BaroncelliPetar AdzicA. MalekMarcos DracosLuis PeraltaF. KapustaGianni ZumerleG. TranstromerA. PulliaE. I. RosenbergP. PoropatP. PoropatAndromachi TsirouCarmen GarcíaAndre AugustinusReynald PainH. FoethMarek SzczekowskiH. KleinK. OsterbergW. VenusW. VenusK. KurvinenD. WickeA. De AngelisP. CollinsG. EigenDaniel BlochM. A. WinterAhmimed OuraouS. HeisingC. WalckR. ReinhardtA. PetroliniF. Fulda-quenzerB. De LottoB. De LottoG. CrosettiEvgueni VlasovE. GrazianiJ. M. BrunetC. WeiserG. Mc PhersonH. HerrL. G. TkatchevA. NygrenTiziano RovelliLuc PapeJ. KurowskaF. CarenaM. PernickaJesus MarcoG. LenzenF. Martinez-vidalV. KostioukhineM. KoratzinosM. FeindtS. Sánchez NavasP. NegriP. FerrariP. SponholzGöran JarlskogCh. JarlskogF. GlegeW. D. ApelDietrich LikoChariclia PetridouChariclia PetridouG. SmadjaS. CrepeJ. Van EldikV. ChorowiczDaniel TreilleM. BigiJ. FayotJ. RidkyNikita SmirnovG. W. Van ApeldoornL. VenturaP. AnderssonChristine KourkoumelisNatale DemariaC. Martinez-riveroP. B. RentonB. MarechalRosy NicolaidouMarta CalviGeoffrey SmithP. RosinskyR. MoellerL. K. ResvanisMassimo CacciaL. SimardL. LeinonenZ. KrumsteinS. PaianoA. De MinG. SajotU. FlagmeyerAnna LipniackaC. JoramR. BarbierPaulo J. S. GonçalvesP. Van DamA. BehrmannThemistocles BowcockPawel JalochaBarry KingE. SpiritiR. FrühwirthJ. TimmermansPierre JuillotE. BoudinovA. OnofrePaolo MorettiniJ. G. LokenP. BeilliereKrzysztof NawrockiStavros MaltezosP. Abreusubject
Particle physicsNuclear and High Energy PhysicsE+E ANNIHILATIONZ(0) RESONANCELogarithmInfraredElectron–positron annihilationMonte Carlo methodTRISTANInversePREDICTIONS01 natural sciencesPartícules (Física nuclear)Nuclear physicsMONTE-CARLO0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicsAnsatzDELPHIQuantum chromodynamicsPhysics010308 nuclear & particles physicsDetectorHigh Energy Physics::PhenomenologyLARGE ELECTRON POSITRON COLLIDERHADRONIC Z-DECAYSPARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIQCD MODELSPARTICLE PHYSICSHADRONIC Z-DECAYS; E+E ANNIHILATION; Z(0) RESONANCE; MONTE-CARLO; QCD MODELS; FRAGMENTATION; PREDICTIONS; TRISTANFísica nuclearHigh Energy Physics::ExperimentFRAGMENTATIONParticle Physics - Experimentdescription
Infrared and collinear safe event shape distributions and their mean values are determined using the data taken at five different centre of mass energies above M-Z with the DELPHI detector at LEP. From the event shapes, the strong coupling alpha(s) is extracted in O(alpha(s)(2)), NLLA and a combined scheme using hadronisation corrections evaluated with fragmentation model generators as well as using an analytical power ansatz. Comparing these measurements to those obtained at M-Z, the energy dependence (running) of alpha(s) is accessible. The logarithmic energy slope of the inverse strong coupling is measured to be d alpha(s)(-1)/d log(E-cm) = 1.39 +/- 0.34 (stat) +/- 0.17(syst), in good agreement with the QCD expectation of 1.27. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
year | journal | country | edition | language |
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1999-01-01 |