6533b82ffe1ef96bd129592d

RESEARCH PRODUCT

Measurements ofB(B¯0→Λc+p¯)andB(B−→Λc+p¯π−)and studies ofΛc+π−resonances

B. AubertM. BonaY. KaryotakisJ. P. LeesV. PoireauE. PrencipeX. PrudentV. TisserandJ. Garra TicoE. GraugesL. LopezA. PalanoM. PappagalloG. EigenB. StuguL. SunG. S. AbramsM. BattagliaD. N. BrownR. N. CahnR. G. JacobsenL. T. KerthYu. G. KolomenskyG. KukartsevG. LynchI. L. OsipenkovM. T. RonanK. TackmannT. TanabeC. M. HawkesN. SoniA. T. WatsonH. KochT. SchroederD. WalkerD. J. AsgeirssonT. Cuhadar-donszelmannB. G. FulsomC. HeartyT. S. MattisonJ. A. MckennaM. BarrettA. KhanL. TeodorescuV. E. BlinovA. D. BukinA. R. BuzykaevV. P. DruzhininV. B. GolubevA. P. OnuchinS. I. SerednyakovYu. I. SkovpenE. P. SolodovK. Yu. TodyshevM. BondioliS. CurryI. EschrichD. KirkbyA. J. LankfordP. LundM. MandelkernE. C. MartinD. P. StokerS. AbachiC. BuchananJ. W. GaryF. LiuO. LongB. C. ShenG. M. VitugZ. YasinL. ZhangV. SharmaC. CampagnariT. M. HongD. KovalskyiM. A. MazurJ. D. RichmanT. W. BeckA. M. EisnerC. J. FlaccoC. A. HeuschJ. KrosebergW. S. LockmanT. SchalkB. A. SchummA. SeidenL. WangM. G. WilsonL. O. WinstromC. H. ChengD. A. DollB. EchenardF. FangD. G. HitlinI. NarskyT. PiatenkoF. C. PorterR. AndreassenG. MancinelliB. T. MeadowsK. MishraM. D. SokoloffF. BlancP. C. BloomW. T. FordA. GazJ. F. HirschauerA. KreiselM. NagelU. NauenbergJ. G. SmithK. A. UlmerS. R. WagnerR. AyadA. SofferW. H. TokiR. J. WilsonD. D. AltenburgE. FeltresiA. HaukeH. JasperM. KarbachJ. MerkelA. PetzoldB. SpaanK. WackerM. J. KobelW. F. MaderR. NogowskiK. R. SchubertR. SchwierzJ. E. SundermannA. VolkD. BernardG. R. BonneaudE. LatourCh. ThiebauxM. VerderiP. J. ClarkW. GradlS. PlayferJ. E. WatsonM. AndreottiD. BettoniC. BozziR. CalabreseA. CecchiG. CibinettoP. FranchiniE. LuppiM. NegriniA. PetrellaL. PiemonteseV. SantoroR. Baldini-ferroliA. CalcaterraR. De SangroG. FinocchiaroS. PacettiP. PatteriI. M. PeruzziM. PiccoloM. RamaA. ZalloA. BuzzoR. ContriM. Lo VetereM. M. MacriM. R. MongeS. PassaggioC. PatrignaniE. RobuttiA. SantroniS. TosiK. S. ChaisanguanthumM. MoriiR. S. DubitzkyJ. MarksS. SchenkU. UwerV. KloseH. M. LackerD. J. BardP. D. DaunceyJ. A. NashW. Panduro VazquezM. TibbettsP. K. BeheraX. ChaiM. J. CharlesU. MallikJ. CochranH. B. CrawleyL. DongW. T. MeyerS. PrellE. I. RosenbergA. E. RubinY. Y. GaoA. V. GritsanZ. J. GuoC. K. LaeA. G. DenigM. FritschG. SchottN. ArnaudJ. BéquilleuxA. D’orazioM. DavierJ. Fermino Da CostaG. GrosdidierA. HöckerV. LepeltierF. Le DiberderA. M. LutzS. PruvotP. RoudeauM. H. SchuneJ. SerranoV. SordiniA. StocchiG. WormserD. J. LangeD. M. WrightI. BinghamJ. P. BurkeC. A. ChavezJ. R. FryE. GabathulerR. GametD. E. HutchcroftD. J. PayneC. TouramanisA. J. BevanK. A. GeorgeF. Di LodovicoR. SaccoM. SigamaniG. CowanH. U. FlaecherD. A. HopkinsS. ParamesvaranF. SalvatoreA. C. WrenD. N. BrownC. L. DavisK. E. AlwynN. R. BarlowR. J. BarlowY. M. ChiaC. L. EdgarG. D. LaffertyT. J. WestJ. I. YiJ. AndersonC. ChenA. JawaheryD. A. RobertsG. SimiJ. M. TuggleC. DallapiccolaS. S. HertzbachX. LiE. SalvatiS. SaremiR. CowanD. DujmicP. H. FisherK. KoenekeG. SciollaM. SpitznagelF. TaylorR. K. YamamotoM. ZhaoS. E. MclachlinP. M. PatelS. H. RobertsonA. LazzaroV. LombardoF. PalomboJ. M. BauerL. CremaldiV. EschenburgR. GodangR. KroegerD. A. SandersD. J. SummersH. W. ZhaoM. SimardP. TarasF. B. ViaudH. NicholsonG. De NardoL. ListaD. MonorchioG. OnoratoC. SciaccaM. A. BaakG. RavenH. L. SnoekC. P. JessopK. J. KnoepfelJ. M. LoseccoW. F. WangG. BenelliL. A. CorwinK. HonscheidH. KaganR. KassJ. P. MorrisA. M. RahimiJ. J. RegensburgerS. J. SekulaQ. K. WongN. L. BlountJ. BrauR. FreyO. IgonkinaJ. A. KolbM. LuR. RahmatN. B. SinevD. StromJ. StrubeE. TorrenceG. CastelliN. GagliardiM. MargoniM. MorandinM. PosoccoM. RotondoF. SimonettoR. StroiliC. VociP. Del Amo SanchezE. Ben-haimH. BriandG. CalderiniJ. ChauveauP. DavidL. Del BuonoO. HamonPh. LerusteJ. OcarizA. PerezJ. PrendkiL. GladneyM. BiasiniR. CovarelliE. ManoniC. AngeliniG. BatignaniS. BettariniM. CarpinelliA. CervelliF. FortiM. A. GiorgiA. LusianiG. MarchioriM. MorgantiN. NeriE. PaoloniG. RizzoJ. J. WalshJ. BiesiadaD. Lopes PegnaC. LuJ. OlsenA. J. S. SmithA. V. TelnovF. AnulliE. BaracchiniG. CavotoD. Del ReE. Di MarcoR. FacciniF. FerrarottoF. FerroniM. GasperoP. D. JacksonL. Li GioiM. A. MazzoniS. MorgantiG. PireddaF. PolciF. RengaC. VoenaM. EbertT. HartmannH. SchröderR. WaldiT. AdyeB. FranekE. O. OlaiyaW. RoethelF. F. WilsonS. EmeryM. EscalierL. EsteveA. GaidotS. F. GanzhurG. Hamel De MonchenaultW. KozaneckiG. VasseurCh. YècheM. ZitoX. R. ChenH. LiuW. ParkM. V. PurohitR. M. WhiteJ. R. WilsonM. T. AllenD. AstonR. BartoldusP. BechtleJ. F. BenitezR. CenciJ. P. ColemanM. R. ConveryJ. C. DingfelderJ. DorfanG. P. Dubois-felsmannW. DunwoodieR. C. FieldA. M. GabareenS. J. GowdyM. T. GrahamP. GrenierC. HastW. R. InnesJ. KaminskiM. H. KelseyH. KimP. KimM. L. KocianD. W. G. S. LeithS. LiB. LindquistS. LuitzV. LuthH. L. LynchD. B. MacfarlaneH. MarsiskeR. MessnerD. R. MullerH. NealS. NelsonC. P. O’gradyI. OfteA. PerazzoM. PerlB. N. RatcliffA. RoodmanA. A. SalnikovR. H. SchindlerJ. SchwieningA. SnyderD. SuM. K. SullivanK. SuzukiS. K. SwainJ. M. ThompsonJ. Va’vraA. P. WagnerM. WeaverC. A. WestW. J. WisniewskiM. WittgenD. H. WrightH. W. WulsinA. K. YarrituK. YiC. C. YoungV. ZieglerP. R. BurchatA. J. EdwardsS. A. MajewskiT. S. MiyashitaB. A. PetersenL. WildenS. AhmedM. S. AlamR. BulaJ. A. ErnstB. PanM. A. SaeedS. B. ZainS. M. SpanierB. J. WogslandR. EckmannJ. L. RitchieA. M. RulandC. J. SchillingR. F. SchwittersB. W. DrummondJ. M. IzenX. C. LouF. BianchiD. GambaM. PelliccioniM. BombenL. BosisioC. CartaroG. Della RiccaL. LanceriL. VitaleV. AzzoliniN. Lopez-marchF. Martinez-vidalD. A. MilanesA. OyangurenJ. AlbertSw. BanerjeeB. BhuyanH. H. F. ChoiK. HamanoR. KowalewskiM. J. LewczukI. M. NugentJ. M. RoneyR. J. SobieT. J. GershonP. F. HarrisonJ. IlicT. E. LathamG. B. MohantyH. R. BandX. ChenS. DasuK. T. FloodY. PanM. PieriniR. PrepostC. O. VuosaloS. L. Wu

subject

PhysicsNuclear and High Energy Physics010308 nuclear & particles physicsBranching fractionElectron–positron annihilationHigh Energy Physics::PhenomenologyAnalytical chemistryDalitz plotLambda01 natural sciencesCharmed baryonsBaryonParticle decay0103 physical sciencesHigh Energy Physics::ExperimentAtomic physics010306 general physicsBar (unit)

description

We present an investigation of the decays B-0 -> Lambda(+)(c)(p) over bar and B- -> Lambda(+)(c)(p) over bar pi(-) based on 383 X 10(6)Y(4S) -> B (B) over bar decays recorded with the BABAR detector. We measure the branching fractions of these decays; their ratio is B(B- -> Lambda(+)(c)(p) over bar pi(-))/B((B) over bar (0) -> Lambda(+)(c)(p) over bar) = 15.4 +/- 1.8 +/- 0.3. The B- -> Lambda(+)(c)(p) over bar pi(-) process exhibits an enhancement at the Lambda(+)(c)(p) over bar threshold and is a laboratory for searches for excited charm baryon states. We observe the resonant decays B- -> Sigma(c)(2455)(0)(p) over bar and B- -> Sigma(c)(2800)(0)(p) over bar but see no evidence for B- -> Sigma(c)(2520)(0)(p) over bar. This is the first observation of the decay B- -> Sigma(c)(2800)(0)(p) over bar; however, the mass of the observed excited Sigma(0)(c) state is (2846 +/- 8 +/- 10) MeV/c(2), which is somewhat inconsistent with previous measurements. Finally, we examine the angular distribution of the B- -> Sigma(c)(2455)(0)(p) over bar decays and measure the spin of the Sigma(c)(2455)(0) baryon to be 1/2, as predicted by the quark model.

https://doi.org/10.1103/physrevd.78.112003