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. 2006 Sep 15;97(11):112001.
doi: 10.1103/PhysRevLett.97.112001. Epub 2006 Sep 12.

Measurement of the spin of the omega(-) hyperon

B Aubert  1 R BarateM BonaD BoutignyF CoudercY KaryotakisJ P LeesV PoireauV TisserandA ZghicheE GraugesA PalanoJ C ChenN D QiG RongP WangY S ZhuG EigenI OfteB StuguG S AbramsM BattagliaD N BrownJ Button-ShaferR N CahnE CharlesM S GillY GroysmanR G JacobsenJ A KadykL T KerthYu G KolomenskyG KukartsevG LynchL M MirP J OddoneT J OrimotoM PripsteinN A RoeM T RonanW A WenzelP Del Amo SanchezM BarrettK E FordT J HarrisonA J HartC M HawkesS E MorganA T WatsonK GoetzenT HeldH KochB LewandowskiM PelizaeusK PetersT SchroederM SteinkeJ T BoydJ P BurkeW N CottinghamD WalkerT Cuhadar-DonszelmannB G FulsomC HeartyN S KnechtT S MattisonJ A McKennaA KhanP KyberdM SaleemD J SherwoodL TeodorescuV E BlinovA D BukinV P DruzhininV B GolubevA P OnuchinS I SerednyakovYu I SkovpenE P SolodovK Yu TodyshevD S BestM BondioliM BruinsmaM ChaoS CurryI EschrichD KirkbyA J LankfordP LundM MandelkernR K MommsenW RoethelD P StokerS AbachiC BuchananS D FoulkesJ W GaryO LongB C ShenK WangL ZhangH K HadavandE J HillH P PaarS RahatlouV SharmaJ W BerryhillC CampagnariA CunhaB DahmesT M HongD KovalskyiJ D RichmanT W BeckA M EisnerC J FlaccoC A HeuschJ KrosebergW S LockmanG NesomT SchalkB A SchummA SeidenP SpradlinD C WilliamsM G WilsonJ AlbertE ChenA DvoretskiiF FangD G HitlinI NarskyT PiatenkoF C PorterA RydA SamuelG MancinelliB T MeadowsM D SokoloffF BlancP C BloomS ChenW T FordJ F HirschauerA KreiselU NauenbergA OlivasW O RuddickJ G SmithK A UlmerS R WagnerJ ZhangA ChenE A EckhartA SofferW H TokiR J WilsonF WinklmeierQ ZengD D AltenburgE FeltresiA HaukeH JasperA PetzoldB SpaanT BrandtV KloseH M LackerW F MaderR NogowskiJ SchubertK R SchubertR SchwierzJ E SundermannA VolkD BernardG R BonneaudP GrenierE LatourCh ThiebauxM VerderiD J BardP J ClarkW GradlF MuheimS PlayferA I RobertsonY XieM AndreottiD BettoniC BozziR CalabreseG CibinettoE LuppiM NegriniA PetrellaL PiemonteseE PrencipeF AnulliR Baldini-FerroliA CalcaterraR de SangroG FinocchiaroS PacettiP PatteriI M PeruzziM PiccoloM RamaA ZalloA BuzzoR 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EdwardsS A MajewskiB A PetersenC RoatL WildenS AhmedM S AlamR BulaJ A ErnstV JainB PanM A SaeedF R WapplerS B ZainW BuggM KrishnamurthyS M SpanierR EckmannJ L RitchieA SatpathyC J SchillingR F SchwittersJ M IzenX C LouS YeF BianchiF GalloD GambaM BombenL BosisioC CartaroF CossuttiG Della RiccaS DittongoL LanceriL VitaleV AzzoliniF Martinez-VidalSw BanerjeeB BhuyanC M BrownD FortinK HamanoR KowalewskiI M NugentJ M RoneyR J SobieJ J BackP F HarrisonT E LathamG B MohantyM PappagalloH R BandX ChenB ChengS DasuM DattaK T FloodJ J HollarP E KutterB MelladoA MihalyiY PanM PieriniR PrepostS L WuZ YuH NealBABAR Collaboration
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Free article

Measurement of the spin of the omega(-) hyperon

B Aubert et al. Phys Rev Lett. .
Free article

Abstract

A measurement of the spin of the Omega(-) hyperon produced through the exclusive process Xi(c)(0)-->Omega(-)K(+) is presented using a total integrated luminosity of 116 fb(-1) recorded with the BABAR detector at the e(+)e(-) asymmetric-energy B factory at SLAC. Under the assumption that the Xi(c)(0) has spin 1/2, the angular distribution of the Lambda from Omega(-)-->LambdaK(-) decay is inconsistent with all half-integer Omega(-) spin values other than 3/2. Lower statistics data for the process Omega(c)(0)-->Omega(-)pi(+) from a 230 fb(-1) sample are also found to be consistent with Omega(-) spin 3/2. If the Xi(c)(0) spin were 3/2, an Omega(-) spin of 5/2 could not be excluded.

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