6533b858fe1ef96bd12b6183

RESEARCH PRODUCT

Measurement ofD s + meson production inZ decays and of theB s 0 lifetime

M. Fernandez-bosmanC. BozziH. MeinhardG. BujosaJie ZhangD. KuhnD. Si MohandS. OrteuJordan NashLei ZhangGiorgio MaggiH. VideauJoseph RothbergA. KoksalB. RenkW. WitzelingF. ThomsonJ. J. AubertRoberto Dell'orsoA. LusianiMossadek TalbyJ. A. PerlasVal O'sheaRoberto TenchiniC. GeorgiopoulosL. F. ThompsonJ. M. ScarrMario GiorgiD. SchlatterI. De BonisMi ParsonsJ. J. VeilletPierluigi CampanaW. CameronF. AriztizabalKevin M. SmithGuido TonelliJ. CarrL. RolandiM.g. SchmidtJoseph ProriolF. StephanA. RoussarieD.p.s. FergusonVitaliano ChiarellaAndré RosowskyM. LethoD. W. KimG. BencivenniA. EngelhardtSalvatore NuzzoDuncan A. BrownF. TeubertLl. M. MirC. BenchoukG. BatignaniZiad AjaltouniAristotelis KyriakisJean-francois GrivazChristian ZeitnitzA. VayakiJ. BoucrotC. K. BowderyP. ColrainA. CordierGiuseppe ZitoC. VanniniM. G. SmithR. Della MarinaD. BuskulicChristian BauerPablo Rodriguez PerezS. BettariniI. FerranteJ. LefrançoisD. M. BinnieEttore FocardiJohn RanderJ. P. LeesG. R. BonneaudN. KonstantinidisEric LanconG. HughesP. GirtlerJorg WotschackT. FearnleyF. MurtasMaria GironeJ. RaabP. J. DornanK. JakobsPhilippe GhezC. RankinM. JacquetJ. M. RossignolS. WasserbaechM. DelfinoS. WernerA. M. GreeneG. BolognaA. BarresAndrea VenturiPh. HeusseY. B. PanA. BeddallF. CombleyJoleen PaterA. J. FinchI. EfthymiopoulosR. BeuselinckPatrick JanotA. GallaPiero Giorgio VerdiniA. BöhrerF. BossiB. MichelA. PutzerH. DrevermannF. SanchezM. Bardadin-otwinowskaYang GaoR. FantechiF. CouraultR. AlemanyX. HuangS. J. DorrisA. M. WalshA. FarillaP. PalazziK. MoffeitC. GewenigerJ. A. StrongV. HeppD. G. CasselE. SimopoulouPaolo LaurelliO. BraunLorenzo FoàP. MaleyC. GuicheneyW. ZhaoLl. GarridoF. RagusaDominique PallinH. DuarteStephanie BrandtPaul HankeE. FernandezR. TanakaStefan SimionF. DydakF. DydakG. GraefeJane NachtmanE. B. MartinR W AssmannI. LehrausR. HagelbergO. CallotGy. WolfE. E. KlugeH. HuT. J. BrodbeckI. AbtM. C. LemaireM. VerderiP. A. McnamaraG. A. CowanDonato CreanzaJohn T HarveyAlessandro GiassiDavid CalvetI.j. ScottS. ThornMarkus FrankP. ReevesGiovanna SelvaggiA. PascualAndrea SciabàF. RanjardO. SchneiderM. CordenAlain FalvardS. XueEmmerich KneringerH.y. KimW. KozaneckiDavid CollingF. PodlyskiW. T. MortonT. WildishM. A. McneilF. FortiC. N. BoothL. M. BryantB. JostP. SaraivaM. SchmellingS. SchaelB. PietrzykGiuseppe RasoR. St. DenisM. ThulasidasH. SeywerdAlberto MessineoF. SaadiPaolo SpagnoloM. Pepe-altarelliD. CasperD. NicodA. MoutoussiS. EmeryJ. JoussetMichael SchmittP. MatoG. LuttersB.s. NilssonL. MonetaM. De PalmaG. BonviciniL. BosisioF. RomanoA. BonissentA. BonissentB. MarxCristinel DiaconuPhilippe OdierA. AntonelliW. MännerC. GoyJ. SchwindlingG. FeliciD. E. JaffeJ.m. YamartinoM. N. MinardG. RudolphA. M. BencheikhGeorg ZobernigM. RumpfT. OestZ. Y. FengD. J. CandlinJ. J. WalshW. M. NewtonLaurent DuflotI. NikolicG. LutzP. PerretG. MusolinoJ. Minguet-rodriguezR. BoswellM. G. GreenR. M. TurnbullF. RiveraJd TurkJ. KnoblochA. ValassiAnna ColaleoM. DavierP. CoyleG. San MartinMaria Agnese CiocciJ.d. HansenI. C. ParkG. GianniniRoger FortyHubert KrohaV. BertinA. BlondelA. BlondelC. RaineNancy MarinelliFabio CeruttiQ. OuyangR. W. ClifftS. MonteilC. PadillaJørgen Beck HansenT. R. EdgecockP. ColasS. NataliG. SanguinettiT. J. SloanJ.g. LynchH. G. SanderB. RenschG.p. MurtasJ. L. HartonP. ComasM. MartinezRamon MiquelA. S. ThompsonP. S. MarrocchesiArnaud LucotteA. TrabelsiP. R. NortonB. VallageK. ZachariadouWerner WiedenmannG. CalderiniLucia SilvestrisStephen HaywoodJ. SteinbergerG. GelaoU. BeckerA. W. HalleyJ. C. BrientS.r. ArmstrongM. H. SchuneTing-chi WangM. WunschH. DietlIan DawsonI. VideauB. Bloch-devauxF. RuggieriVivek SharmaG. CaponA. GregorioA. Rosado-schlosserAlan M. LitkeMario MaggiF. EtienneO.j. HayesR. SettlesD. DecampS. L. CartwrightE. P. WhelanJiali LinA. M. StaceyC. GotzheinH.j. ParkC. BoyerP. PayreI. SiotisR. G. JacobsenGiuseppe IaselliGunter QuastGerardo GanisI. Ten HaveG. B. TaylorRobert RichterB. GobboXin WuP. TempestaH. WachsmuthPaolo AzzurriGünther DissertoriDuccio AbbaneoJ. F. RenardyElizabeth LocciW. OrejudosR. P. JohnsonA. P. BetteridgeA. MintenVitaliano CiulliDavid RousseauR. WankeG. CrawfordH. G. MoserP. H. HansenI. G. KnowlesV. GaitanJ. P. SchullerD. GambinoFabrizio PallaHasko StenzelG. ParriniJ. C. ThompsonY. SaadiF. FosterA. PachecoL. SmolikM. ZhengF. Le DiberderG. MannocchiD. R. BotterillJ. F. PusztaszeriM. ChmeissaniA. M. LutzSau Lan WuP. BourdonJ. M. CrespoG. LütjensJ. SommerJ. GrahlM. ApollonioPeter ElmerYuehong XieP. PerrodoGiuseppe BagliesiL. BellantoniJ. K. SedgbeerT. MedcalfM. I. WilliamsM. EdwardsM. CarpinelliP. RensingG. TriggianiA. RanieriAndré RougéY. S. GaoW. BlumJ.r. HansenC. GrupenS. GonzalezK. TittelKonrad KleinknechtL. PassalacquaW. TejessyG. RizzoIan R TomalinG.a. BlairC. MarkouJean-claude MontretU. StierlinP. HenrardR. XuFranco LigabueDaniel JohnsonE. FeiglMarco Cattaneo

subject

PhysicsParticle physicsMeson productionPhysics and Astronomy (miscellaneous)MesonElectron–positron annihilationHadronDecay lengthVertex (geometry)

description

D + mesons produced inZ 0→bb events were separated from theZ 0→cc component using a lifetime tag. Using a sample of 1.5 million hadronicZ decays collected with theAleph detector theB 0 andD s + yields have been measured: $$\begin{gathered} \hfill B(b \to \bar B_s^0 )B(\bar B_s^0 \to D_s^ + ) = 0.088 \pm 0.020(stat.) \\ \hfill \pm 0.020(stat.) \\ \hfill B(c \to D_s^ + ) = 0.088 \pm 0.020(stat.)_{ - 0.016}^{ + 0.019} (syst.) \\ \end{gathered} $$ TheB 0 lifetime was measured in aB 0 enriched sample reconstructing the decay length from the vertex of theD + with a hadron from theB 0 decay. The result obtained is: $$\tau _{B_s } = 1.61_{ - 0.29}^{ + 0.30} (stat.)_{ - 0.016}^{ + 0.018} (syst.)$$ ps.

https://doi.org/10.1007/bf02907442