6533b827fe1ef96bd1286dc4
RESEARCH PRODUCT
Measurement of theI=1/2Kπ S-wave amplitude from Dalitz plot analyses ofηc→KK¯πin two-photon interactions
J. L. RitchieHerbert KochS. I. SerednyakovR. Y. SoK. GriessingerF. De MoriA. G. DenigBrian MeadowsA. OyangurenG. J. KingS. EmeryColin JessopK. R. SchubertF. Di LodovicoTimothy GershonT. LeddigD. J. PayneR. GodangYu. G. KolomenskyW. S. LockmanBiplab DeyR. KowalewskiH. A. NealM. R. ConveryR. GorodeiskyD. A. RobertsJ. ChauveauR. PrepostC. TouramanisC. H. ChenS. M. SpanierJ. R. SmithB. BhuyanD. BettoniB. G. FulsomR. StroiliMarcin ChrzaszczR. CalabreseG. VasseurK. T. FloodM. VerderiA. HafnerA. CalcaterraU. MallikA. R. BuzykaevB. N. RatcliffElisa ManoniA. RoodmanA. M. LutzE. M. T. PuccioA. BeaulieuR. CenciJ. M. RoneyM. K. SullivanMarco BombenW. J. WisniewskiI. GarziaJames R. WilsonThomas LathamC. PatrignaniA. ZalloE. A. KravchenkoV. TisserandYu. I. SkovpenE. FioravantiMaurizio BiasiniDouglas WrightS. PassaggioM. FritschD. B. MacfarlaneZ. C. HuardMiriam HeßRoland WaldiM. T. GrahamJ. OcarizEleonora LuppiAndrei GritsanOwen Rosser LongC. BüngerG. EigenF. FerroniD. N. BrownS. BettariniGeorge LaffertyA. FilippiJ. W. GaryCrisostomo SciaccaD. AstonJ. A. ErnstJ. KimSw. BanerjeeF. AnulliR. CheaibAlessandro GazA. JawaheryA. P. OnuchinR. CowanL. SunG. CibinettoR. SaccoE. GraugesMario GiorgiAbner SofferE. P. SolodovT. S. MiyashitaAdrian John BevanJ. M. LoseccoAlessandro PilloniD. R. PeimerJ. J. WalshT. S. MattisonG. R. BonneaudMichael R. PenningtonPaul Fraser HarrisonO. GrünbergC. HastD. J. LangeA. J.s. SmithD. W. G. S. LeithG. PireddaW. Panduro VazquezSimon AkarM. CarpinelliStephen SekulaTim AdyeM. BellisR. D. KassJ. A. MckennaE. GabathulerC. BozziK. HonscheidW. R. InnesF. C. PorterE. PaoloniG. CalderiniG. RavenV. B. GolubevP. R. BurchatFernando PalomboStephen Robert WagnerChristian VoßMatteo RamaM. PosoccoA. PalanoS. PrellJ. DorfanMichael SokoloffJames H CochranV. PoireauRoger BarlowMartino MargoniFlorian Urs BernlochnerT. LueckDavid HutchcroftW. GradlP. OngmongkolkulL. LanceriM. EbertN. TasneemS. LuitzP. PatteriR. C. FieldV. P. DruzhininG. FinocchiaroAidan Randle-condeV. LuthA. M. RossiM. S. AlamJoseph IzenM. PiccoloS. MartellottiB. OberhofN. ArnaudG. BatignaniK. Yu. TodyshevB. G. PushpawelaI. M. NugentD. S. ChaoM. DavierR. F. SchwittersC. H. ChengAlberto LusianiG. De NardoR. De SangroS. L. WuM. RöhrkenP. TarasB. EchenardD. BernardJ. P. ColemanFergus WilsonA. M. EisnerG. Hamel De MonchenaultM. V. PurohitJ. AlbertI. M. PeruzziV. SantoroF. BianchiS. DittrichV. E. BlinovG. RizzoR. FacciniF. FerrarottoA. J. LankfordF. Le DiberderMarcello RotondoL. M. CremaldiG. A. CowanD. G. HitlinJ. Va’vraNicola NeriD. GambaGiulia CasarosaG. WormserN. GuttmanG. MarchioriT. SchroederW. DunwoodieF. SimonettoJean-pierre LeesC. CartaroE. Ben-haimX. C. LouC. HeartyD. J. SummersL. VitaleF. Martinez-vidalDominik MüllerH. AhmedF. FortiGabriele SimiC. L. DavisPeter S. KimS. H. Robertsonsubject
PhysicsParticle physicsMeson010308 nuclear & particles physicsPartial wave analysisElectron–positron annihilationPhase (waves)ResonanceDalitz plot01 natural scienceslaw.inventionNuclear physicsAmplitudelaw0103 physical sciences010306 general physicsColliderdescription
We study the processes γγ→K^0_SK^±π^∓ and γγ→K^+K^−π^0 using a data sample of 519 fb^(−1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c^2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a_0(1950) resonance with parameters m=1931±14±22 MeV/c^2 and Γ=271±22±29 MeV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-20 | Physical Review D |