6533b7cffe1ef96bd1258335

RESEARCH PRODUCT

Search for γγ→ηb in e+e− collisions at LEP 2

J. A. StrongE. SimopoulouA. RanieriJ. KennedyO. CallotJohn H. L. HansenW. MännerStefan SchaelA. RougéC. GoyG. BoixG. BoixGerardo GanisGerardo GanisE. FernandezA. SciabàD. FouchezP. H. HansenO. AwunorGavin DaviesM. ChmeissaniLaurent SerinChang-zheng YuanJ. M. CrespoD.p.s. FergusonDjamel Eddine BoumedieneS. GonzalezK. TittelKonrad KleinknechtP. ColasM. MartinezRamon MiquelRamon MiquelJ. ColesB. Bloch-devauxS. SchmelingG. B. TaylorP. TempestaM. Fernandez-bosmanLei ZhangChristophe DelaereB. RenkG.a. BlairVitaliano ChiarellaG. LütjensA. S. ThompsonP. R. NortonD. DecampRichard CavanaughJ. P. LeesW. TejessyD. FayolleTimothy BarklowTimothy BarklowP. PerezMaria GironeMaria GironeEvelina Vassileva Bouhova-thackerP. PerretG. LeibenguthBenjamin TrocméAndrea VenturiAndrea VenturiA. PutzerR. BruneliereC. CurtilAlan LitkeMario MaggiEric LanconYuehong XieGiuseppe BagliesiF. BossiDavid HutchcroftH. G. MoserMarumi KadoMarumi KadoR. BeuselinckL. RolandiIan R TomalinA. J. FinchH. DrevermannBoris TuchmingClaus GrupenJie ZhangVitaliano CiulliA. BöhrerVal O'sheaA. JacholkowskaTing WangH. RuizDuccio AbbaneoC. LoomisElizabeth LocciGiuseppe ZitoD. M. BinnieEttore FocardiJohn RanderU. BlumenscheinH. PrzysiezniakH. PrzysiezniakC. MarkouD.p. ClarkePaul HodgsonP. GirtlerL. DuflotFrancesco RagusaD. SchlatterG. MerinoMassimo AntonelliJ. KileS. MonteilJ. BoucrotS.r. ArmstrongL. PassalacquaY. B. PanM. WunschE. MerleDonato CreanzaJohn T HarveyJ. H. Von Wimmersperg-toellerF. CombleyPierluigi CampanaDominique PallinQ. OuyangPedro Teixeira-diasStephane JezequelH. DietlD. KuhnAlessandro GiassiO. Van Der AaJean-francois GrivazF. MurtasK. AffholderbachK. ZachariadouArno HeisterAristotelis KyriakisH. HuN. A. RobertsonF. BadaudS. L. CartwrightJ. PutzGiuseppe RasoMaria SmizanskaF. RuggieriS. BrandtO.j. HayesR. SettlesJohn-bjarne HansenJ. RothbergS. JinA. NgacJiali LinJ.c. ThompsonJ.c. ThompsonK. BerkelmanB. VallageDavid PanequeG. RudolphG. CaponG. PrangeP. NegusJunjie WuP. J. DornanK. HüttmannR. XuS. WernerV. HeppG. SanguinettiJ. J. VeilletX. HuangKarl JakobsM. De PalmaPaolo LaurelliJ. K. SedgbeerA.-s. MüllerA. DavidFranco LigabueM.-n. MinardKyle CranmerT. R. EdgecockJ.m. PascoloAlessia TricomiLl. M. MirLl. M. MirW. ZhaoPatrick JanotMarkus FrankH. G. SanderV. M. GheteG.p. MurtasLl. GarridoLl. GarridoJ. LopezA. BonissentNancy MarinelliT. MedcalfT. ZieglerM. C. LemaireGunter QuastGunter QuastGiovanna SelvaggiO. BuchmüllerO. BuchmüllerP. PayreM.r. PearsonR. W. L. JonesB. FabbroF. F. MartinPaul HankeAndrea GiammancoMarco CattaneoI. VideauF. RanjardS.a. RutherfordAnna ColaleoP. A. McnamaraN. KonstantinidisR. WhiteMaria Pilar CasadoPiero Giorgio VerdiniA. BlondelRoger FortyGiuseppe IaselliJ.j. WardG. MannocchiN. De FilippisEmmerich KneringerC. N. BoothA. RosowskyS. BravoG. GianniniXin WuB. MichelChristian ZeitnitzA. EaletH. HeF. CeruttiA. TrabelsiA. TrabelsiM. SwynghedauwF. KayserJ. JoussetF. TeubertR. W. ClifftJ. NielsenFabrizio PallaA. MisiejukR. BarateT.c. GreeningT.c. GreeningJ.g. LynchS. WasserbaechHasko StenzelG. EllisS. L. WuI. De BonisVincent LemaitreJf RenardyA. VayakiTommaso BoccaliG. ParriniY. S. GaoY. S. GaoH. WachsmuthJ. B. De Vivie De RegieA. AntonelliGy. WolfLucia SilvestrisJ. D. HansenA. W. HalleyA. MoutoussiGiacomo SguazzoniG. A. CowanJ. C. BrientF. GianottiB. PietrzykS. DessagneG. BencivenniBarbara ClerbauxReisaburo TanakaP. SeagerC. K. BowderyP. MatoB.s. NilssonA. TilquinS. XueL.t. JonesLorenzo FoàC. BoreanPaolo AzzurriGünther DissertoriJ. NowellB. JostAlberto MessineoA. Garcia-bellidoM H. LehtoPh. HeusseRoberto TenchiniRoberto TenchiniL. F. ThompsonE. GraugesF. MachefertW. CameronF. HölldorferC. GewenigerU. SielerE. E. KlugeAlain FalvardS. DhamotharanP. CoyleF. FosterA. PachecoAndrea ValassiGeorg ZobernigWerner WiedenmannM. G. GreenM. DavierJ. HessH. VideauR.d. HillG. MaggiSalvatore NuzzoG. Hughes

subject

PhysicsQuantum chromodynamicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physicsQuarkonium01 natural sciencesPseudoscalar mesonConfidence intervalCharged particleNuclear physics0103 physical sciencesHigh Energy Physics::Experiment010306 general physics

description

A search for the pseudoscalar meson eta_b is performed in two-photon interactions at LEP~2 with an integrated luminosity of 699 pb^-1 collected at e+e- centre-of-mass energies from 181 GeV to 209 GeV. One candidate event is found in the six-charged-particle final state and none in the four-charged-particle final state, in agreement with the total expected background of about one event. Upper limits of Gamma_gammagamma(eta_b) * BR(eta_b -> 4 charged particles) 6 charged particles) < 132 eV are obtained at 95% confidence level, which correspond to 95% confidence level upper limits of 9.0% and 25% on these branching ratios.

yearjournalcountryeditionlanguage
2002-03-01Physics Letters B
https://doi.org/10.1016/s0370-2693(02)01329-1