6533b86ffe1ef96bd12cdc62

RESEARCH PRODUCT

InclusiveΛc+production ine+e−annihilations ats=10.54  GeVand inΥ(4S)decays

D. MonorchioN. L. BlountG. Della RiccaH. W. ZhaoJ. OcarizY. B. PanR. KowalewskiF. SimonettoR. H. SchindlerP. D. DaunceyMirco AndreottiV. B. GolubevW. MengesN. De GrootT. J. HarrisonJ. W. GaryM. BondioliP. C. BloomJordan NashJ. Va'vraMatteo RamaC. H. ChengO. HamonMaurizio PieriniI. OfteA. J. EdwardsA. HöckerN. S. KnechtA. I. RobertsonS. PrellR. KroegerM. PappagalloK. SuzukiJ. A. KadykChunhui ChenPaul KyberdJ. R. FryAmina ZghicheR. De SangroA. T. WatsonR. S. DubitzkyC. K. LaeMaurizio BiasiniL. A. CorwinA. LazzaroD. SuJames H CochranV. PoireauB. LewandowskiA. SofferJ. L. RitchieH. K. HadavandJ. W. BerryhillPierluigi PaolucciN. DanielsonK. K. GanJ. ChauveauR. C. FieldF. SalvatoreJ. F. HirschauerG. FinocchiaroV. LuthJ. MalclèsM. H. SchuneU. UwerT. BrandtR. StroiliS. E. MclachlinH. A. NealF. GalloK. MishraM. CarpinelliM. T. NaisbitLydia RoosM. MorgantiM. M. MacriS. J. SekulaJ. M. LoseccoN. B. SinevG. RizzoJ. A. MckennaF. BlancOwen Rosser LongA. SeidenG. B. MohantyM. PiccoloM. T. AllenS. RodierH. KaganM. SaleemS. PlayferC. P. O'gradyAkram KhanJ. M. BauerC. DallapiccolaCh De La VaissièreA. JawaheryS. D. FoulkesG. CibinettoF. Di LodovicoBernard AubertH. SchröderS. LuitzS. L. WuX. R. ChenS. BrunetF. FangW. H. TokiG. BatignaniW. GradlS. A. MajewskiJ. J. HollarFabrice CoudercS. F. GanzhurH. R. BandR. GodangY. S. ZhuJ. A. ErnstM. S. AlamA. SnyderA. RydM. DattaP. KimT. M. HongM. MandelkernA. C. WrenM. A. BaakMarkus CristinzianiA. V. TelnovH. NicholsonPatricia R. BurchatMartino MargoniJ. J. RegensburgerD. J. PayneU. NauenbergPrafulla Kumar BeheraH. M. LackerJanice Button-shaferG. R. BonneaudJ. DorfanW. S. LockmanUlrik EgedeT. HeldK. E. FordR. MessnerR. BartoldusG. RongV. EschenburgH. L. LynchQ. L. ZengDmytro KovalskyiF. BucciSilvano TosiP. TarasE. P. SolodovM. LegendreJ. P. LeesJ. J. BackT. SchalkCh ThiebauxF. F. WilsonH. StaengleJ. SchwieningE. J. HillP. E. KutterT. AllmendingerM. GasperoG. NesomPh LerusteA. P. OnuchinD. C. WilliamsM. ChaoLiliana TeodorescuJames R. WilsonWilliam T. FordH. BriandX. C. LouJ. J. WalshM. SteinkeK. YiJ. MerkelA. ChenV. EygesB. A. PetersenPhilippe GrenierWolfgang MaderZongfu YuM. J. CharlesS. PacettiR. CowanA. G. DenigM. R. ConveryA. M. RahimiT. E. LathamD. WalkerJ. M. ThompsonS. PruvotAdrian John BevanN. ArnaudA. M. EisnerA. KreiselA. K. YarrituM. BarrettR. AleksanS. B. ZainL. Del BuonoG. De NardoG. S. AbramsR. EckmannJ. C. DingfelderS. AbachiP. RoudeauV. HalyoA. OyangurenPaul JacksonD. N. BrownI. M. NugentR. K. YamamotoG. BlaylockD. M. StromK. S. ChaisanguanthumR. FreyN. Lopez-marchC. LuD. JuddA. PetzoldG. Hamel De MonchenaultM. Lo VetereC. J. FlaccoV. AzzoliniM. H. KelseyA. SatpathyL. Li GioiL. GladneyR. FacciniD. CôtéJ. BiesiadaF. FerrarottoA. J. LankfordM. A. MazzoniG. WormserJ. A. KolbKenji HamanoJ. ZhangF. Le DiberderR. RahmatE. LatourP. S. JacksonE. CharlesFabio CossuttiW. M. BuggFrancesco PolciAlberto LusianiD. J. BardD. J. SherwoodW. D. HulsbergenM. V. PurohitH. MarsiskeI. NarskyM. T. GrahamC. M. HawkesL. DongG. EigenA. PompiliMarcella BonaG. D. LaffertyJ. D. RichmanT. S. MattisonD. A. SandersM. PelizaeusC. A. HeuschE. I. RosenbergNicola CavalloNicola CavalloJ. P. ColemanP. LundD. BettoniC. GattoH. JasperBruce MelladoR. L. FlackM. WittgenF. BelliniY. KaryotakisB. SpaanT. J. OrimotoD. FortinFrancesco FabozziFrancesco FabozziJ. I. YiA. A. SalnikovS. S. HertzbachY. GroysmanCorrado AngeliniF. Safai TehraniJ. MarksJohn AllisonYu I. SkovpenG. A. CowanF. AnulliPhilip BechtleM. DavierMauro MorandinC. HastV. LombardoH. L. SnoekD. J. LangeG. PireddaA. GaidotCh YècheOlga IgonkinaB. BhuyanS. DittongoA. CalcaterraA. D. BukinF. MuheimL. LanceriR. G. JacobsenP. PatteriG. KukartsevA. DvoretskiiJ. C. ChenM. A. MazurG. W. BrandenburgR. N. CahnL. WildenG. LynchC. HeartyS. AhmedM. MoriiT. SchroederMaria Roberta MongeE. A. EckhartS. BettariniTim AdyeM. SpitznagelSai-juan ChenB. N. RatcliffC. VociN. Van BakelD. GambaMaria A. NagelA. MihalyiN. T. MeyerR. D. KassV. P. DruzhininC. BozziA. PetrellaA. M. LutzNicolas BergerE. PaoloniB. PanVivek JainD. J. SummersP. SpradlinS. EmeryJ. SchubertDavide PiccoloX. R. ChenKeith UlmerB. L. HartfielM. BruinsmaV. ZieglerW. J. WisniewskiD. Del ReW. A. WenzelN. D. QiB. G. FulsomR. SchwierzK. HonscheidC. A. ChavezD. A. HopkinsS. M. SpanierG. MancinelliM. T. RonanI. M. PeruzziM. KrishnamurthyJ. E. SundermannE. ChenB. StuguF. R. WapplerG. P. Dubois-felsmannD. DujmicCrisostomo SciaccaD. AstonW. DunwoodieG. MarchioriA. BuzzoG. SciollaM. BombenM. ZitoR. J. BarlowR. J. SobieSh. RahatlouD. E. WagonerW. O. RuddickS. PassaggioJ. M. RoneyA. PerazzoC. VoenaGabriele SimiT. W. BeckL. VitaleT. B. MooreC. L. DavisF. WinklmeierM. L. PerlR. GametV. E. OzcanC. C. YoungF. Martinez-vidalDominik MüllerW. T. MeyerLuca ListaM. PosoccoM. VerderiM. S. GillM. HaireJ. C. WilliamsA. HaukeC. RoatS. I. SerednyakovF. BianchiK. A. GeorgePeter ElmerJ. G. SmithRoberto CovarelliJ. P. BurkeE. TorrenceB. FranekQ. K. WongN. A. RoeJ. T. BoydR. ContriP. DavidJoseph IzenEnrico RobuttiA. PalanoU. MallikC. CartaroS. SchenkM. B. NikolichA. VolkA. RoodmanB. DahmesR. BulaA. E. RubinA. SantroniT. Cuhadar-donszelmannK. PetersK. WangJ. KrosebergA. StocchiG. CavotoMarcello RotondoH. U. FlaecherDavid HutchcroftV. LepeltierT. PulliamM. LuC. TouramanisI. EschrichM. BenayounD. HufnagelClaudio CampagnariR. J. WilsonRoland WaldiP. Del Amo SanchezL. M. CremaldiF. FerroniD. P. StokerD. BernardW. F. WangW. Panduro VazquezM. EbertF. FortiS. K. SwainL.m. ZhangPu WangM. K. SullivanD. G. HitlinHung-wen LiuS. YeR. Ter-antonyanNicola NeriD. A. BowermanPaul Fraser HarrisonA. D'orazioP. M. PatelStephen Robert WagnerS. H. RobertsonF. B. ViaudX. ChaiK. R. SchubertR. ClausV. KloseHerbert KochS. CurryC. J. SchillingY. M. ChiaMatteo NegriniDouglas WrightI. J. ForsterM. BattagliaH. P. PaarJ. E. BrauYu. G. KolomenskyS. J. GowdySw. BanerjeeR. CenciA. ZalloH. B. CrawleyM. FritschP. J. ClarkBruce SchummR. K. MommsenD. D. AltenburgA. J. HartL. BosisioEleonora LuppiW. ParkAndrei GritsanJustin AlbertE. Di MarcoD. H. WrightC. PatrignaniA. CunhaShu LiV. TisserandA. GazL. M. MirT. R. McmahonT. PiatenkoW. RoethelJ. StrubeL. PiemonteseE. GraugesMario GiorgiE. GabathulerS. MorgantiSridhara DasuW. R. InnesF. C. PorterA. J.r. WeinsteinE. FeltresiD. J. AsgeirssonColin JessopR. PrepostD. BoutignyR. NogowskiXiang LiE. PrencipeC. D. BuchananA. OlivasM. WeaverR. Baldini-ferroliW. BhimjiD. KirkbyG. VasseurK. C. SchofieldJ. StelzerH. KimB. T. MeadowsG. RavenM. D. SokoloffC. M. BrownB. ChengV. E. BlinovC. L. EdgarS. RicciardiTetiana Hryn'ovaK. T. FloodKu Y. TodyshevD. W. G. S. LeithW. N. CottinghamG. SchottS. SaremiG. CalderiniR. SaccoG. TherinW. KozaneckiYuehong XieY. P. LauA. J.s. SmithM. G. WilsonM. PripsteinG. BenelliM. SimardD. A. RobertsF. E. TaylorE. O. OlaiyaM. A. SaeedG. GrosdidierN. R. BarlowF. PalomboJunqiao WuVivek SharmaJames D. OlsenL. T. KerthT. GlanzmanR. F. SchwittersD. B. MacfarlaneRoberto CalabreseB. C. Shen

subject

PhysicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physicsBranching fractionNuclear TheoryHigh Energy Physics::PhenomenologyHadronLambda01 natural sciencesNuclear physicsCharmed baryonsBaryonParticle decayPion0103 physical sciencesHigh Energy Physics::ExperimentNuclear Experiment010306 general physics

description

We present measurements of the total production rates and momentum distributions of the charmed baryon Lambda(+)(c) in e(+)e(-)-> hadrons at a center-of-mass energy of 10.54 GeV and in Upsilon(4S) decays. In hadronic events at 10.54 GeV, charmed hadrons are almost exclusively leading particles in e(+)e(-)-> cc events, allowing direct studies of c-quark fragmentation. We measure a momentum distribution for Lambda(+)(c) baryons that differs significantly from those measured previously for charmed mesons. Comparing with a number of models, we find none that can describe the distribution completely. We measure an average scaled momentum of =0.574 +/- 0.009 and a total rate of N-Lambda c(qq)=0.057 +/- 0.002(exp.)+/- 0.015(BF) Lambda(+)(c) per hadronic event, where the experimental error is much smaller than that due to the branching fraction into the reconstructed decay mode, pK(-)pi(+). In Upsilon(4S) decays we measure a total rate of N-Lambda c(Upsilon)=0.091 +/- 0.006(exp.)+/- 0.024(BF) per Upsilon(4S) decay, and find a much softer momentum distribution than expected from B decays into a Lambda(+)(c) plus an antinucleon and one to three pions.

https://doi.org/10.1103/physrevd.75.012003