6533b85cfe1ef96bd12bc7be

RESEARCH PRODUCT

Observation ofηc(1S)andηc(2S)decays toK+K−π+π−π0in two-photon interactions

A. G. DenigJ. E. BrauE. SalvatiColin JessopR. PrepostF. Di LodovicoA. OyangurenV. PrasadC. HeartyD. J. PayneU. NauenbergRoberto CalabreseW. F. WangPrafulla Kumar BeheraK. WackerD. J. SummersE. C. MartinJ. SchwieningG. OnoratoYu. G. KolomenskySilvano TosiG. JacksonS. BettariniJ. AndersonGeorge LaffertyM. TibbettsX. C. LouJ. J. WalshJ. PrendkiB. T. MeadowsM. WeaverC. TouramanisH. A. NealElisa GuidoJ. L. RitchieJ. SerranoM. BombenR. J. SobieG. P. Dubois-felsmannJ. A. KolbMarie Helene SchuneG. SciollaR. Baldini-ferroliL. VitaleM. L. PerlZ. J. GuoJoseph IzenG. RavenF. Martinez-vidalD. MonorchioJ. DorfanM. D. SokoloffP. R. BurchatJ. OcarizN. L. BlountD. KirkbyG. VasseurR. AyadR. AyadDominik MüllerDouglas WrightH. MarsiskeMaurizio MartinelliA. RoodmanD. N. BrownG. M. VitugA. N. YushkovE. FioravantiT. PulliamRoland WaldiF. FerroniJ. W. GaryPh LerusteN. ArnaudA. M. EisnerS. B. ZainG. De NardoA. VolkV. SordiniV. SordiniPaul Fraser HarrisonP. D. DaunceyT. HartmannH. SchröderP. M. PatelS. LuitzStephen Robert WagnerJ. M. TuggleY. B. PanL. O. WinstromT. M. KarbachR. KowalewskiK. R. SchubertJ. M. RoneyMirco AndreottiD. E. HutchcroftMarcello RotondoR. CenciC. DallapiccolaA. Y. RakitinJ. G. SmithA. M. LutzE. M.t. PuccioM. SimardD. A. RobertsG. GrosdidierB. N. RatcliffR. AndreassenA. J. EdwardsG. Hamel De MonchenaultKenji HamanoR. RahmatI. M. NugentJ. Garra TicoD. DujmicElisa ManoniS. ParamesvaranA. PetrellaDmytro KovalskyiJ. P. LeesA. R. BuzykaevR. SchwierzT. J. GershonS. PlayferM. BattagliaI. OfteM. FritschM. ZhaoC. LuJ. Firmino Da CostaO. HamonP. BiassoniC. O. VuosaloA. ZalloW. J. WisniewskiS. PassaggioM. DavierS. NelsonT. LeddigC. P. O'gradyV. SantoroM. BondioliHyun-chul KimSw. BanerjeeM. MuneratoHeiko LackerH. R. BandA. V. TelnovM. V. PurohitW. S. LockmanV. P. LombardoR. FacciniF. FerrarottoA. J. LankfordR. F. SchwittersJ. P. MorrisB. C. WrayE. O. OlaiyaM. A. SaeedL. A. CorwinA. AdametzP. LundG. LynchM. L. KocianDenis BernardS. StrackaB. MalaescuA. CecchiD. A. DollM. T. GrahamK. SuzukiD. B. MacfarlaneA. JawaheryAlessandro RossiG. CibinettoM. SigamaniA. K. YarrituL. M. CremaldiD. SuM. WittgenD. LindemannM. SchramF. PalomboM. R. ConveryA. CalcaterraH. AtmacanF. Le DiberderA. PetzoldC. A. WestJ. D. RichmanJ. M. ThompsonJ. M. LoseccoR. ContriE. FeltresiH. H. F. ChoiM. NicolaciM. PiccoloM. T. AllenA. P. OnuchinH. B. CrawleyB. FranekN. Lopez-marchEleonora LuppiI. BinghamW. ParkChunhui ChenR. FreyT. LueckGabriele SimiA. M. RulandC. L. DavisT. S. MattisonK. T. FloodP. TarasE. P. SolodovR. GametM. H. KelseyB. PanG. BatignaniJames D. OlsenN. B. SinevF. LiuJ. MarksD. P. StokerV. B. GolubevB. LindquistI. M. PeruzziG. A. CowanC. C. YoungC. HastW. T. MeyerD. J. LangeG. PireddaL. WangR. SaccoP. J. ClarkD. A. MilanesBruce SchummAchille StocchiB. EchenardM. MandelkernL. T. KerthA. P. WagnerM. MoriiMauro MorandinH. W. WulsinJ. R. FryA. PalanoP. KimC. L. LeeF. RengaR. M. WhiteH. L. SnoekM. Franco SevillaC. CartaroE. Ben-haimA. C. WrenS. I. SerednyakovF. BianchiJ. ChauveauC. H. ChengMartino MargoniP. FranchiniMatteo NegriniD. BettoniA. HafnerJ. KrosebergG. CavotoA. E. RubinMario PelliccioniClaudio CampagnariM. GasperoS. M. SpanierS. PacettiR. CowanE. PrencipeM. CarpinelliL. DongR. De SangroS. L. WuV. E. BlinovD. DerkachG. RizzoPhilippe GrenierJ. AlbertMaurizio BiasiniD. G. HitlinF. FortiJ. P. ColemanA. J.s. SmithN. GagliardiX. R. ChenW. H. TokiE. GraugesMario GiorgiM. EbertM. VerderiM. S. DubrovinP. RoudeauL. Li GioiJ. Va’vraBenjamin Henry HoobermanG. R. BonneaudU. MallikOwen Rosser LongJ. E. WatsonA. SeidenR. EckmannJ. MerkelE. BaracchiniK. E. AlwynSridhara DasuS. SittD. J. BardB. SpaanP. Del Amo SanchezD. W. G. S. LeithD. H. WrightJ. A. ErnstT. S. MiyashitaS. AhmedD. GambaMaria A. NagelM. PappagalloC. PatrignaniCorrado AngeliniShu LiV. TisserandStephen SekulaJ. StrubeL. SunAlberto CervelliH. JasperA. J. MartinezP. SonnekK. J. KnoepfelG. CalderiniL. LanceriR. C. FieldL. PiemonteseD. Lopes PegnaT. TanabeN. GuttmanB. StuguAdrian John BevanA. KhanD. S. BaileyV. P. DruzhininC. BozziE. GabathulerK. HonscheidC. A. ChavezW. R. InnesW. GradlF. C. PorterMatteo RamaD. J. AsgeirssonS. PrellNicola NeriR. J. BarlowJames H CochranV. PoireauAidan Randle-condeG. FinocchiaroV. LuthA. LusianiX. NguyenM. PosoccoM. ZitoG. MarchioriG. CastelliT. M. HongT. SchalkOlga IgonkinaA. M. GabareenM. S. AlamA. SnyderGiulia CasarosaW. T. FordM. A. MazzoniG. WormserF. F. WilsonAndrei GritsanTim AdyeR. D. KassG. MancinelliT. SchroederEnrico RobuttiW. DunwoodieE. TorrenceP. OngmongkolkulC. A. HeuschM. J. LewczukCrisostomo SciaccaD. AstonM. J. KobelT. E. LathamA. PerezE. I. RosenbergR. GodangR. GodangH. L. LynchD. M. StromChristopher WestYu I. SkovpenF. SimonettoR. H. SchindlerF. AnulliR. KroegerA. T. WatsonAlessandro GazS. H. RobertsonS. EmeryHerbert KochS. CurryC. J. SchillingShouheng SunV. ZieglerP. PatteriB. BhuyanB. G. FulsomI. L. OsipenkovM. K. SullivanAbner SofferCh YècheMaria Roberta MongeJ. A. MckennaE. PaoloniR. BartoldusM. BellisP. C. BloomA. LazzaroJ. F. BenitezM. Lo VetereF. U. BernlochnerG. J. KingK. Yu TodyshevU. UwerR. StroiliJames R. WilsonC. M. HawkesH. BriandA. A. SalnikovG. Eigen

subject

Systematic errorPhysicsNuclear and High Energy Physics010308 nuclear & particles physicsBranching fractionResonanceState (functional analysis)01 natural sciencesMeasure (mathematics)law.inventionNuclear physicsParticle decaylaw0103 physical sciences010306 general physicsCollider

description

We study the processes γγ→K_S^0K^±π^∓ and γγ→K^+K^-π^+π-π^0 using a data sample of 519.2fb^(-1) recorded by the BABAR detector at the PEP-II asymmetric-energy e^+e^- collider at center-of-mass energies near the Υ(nS) (n=2, 3, 4) resonances. We observe the η_c(1S), χ_(c0)(1P) and η_c(2S) resonances produced in two-photon interactions and decaying to K^+K^-π^+π^-π^0, with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0σ evidence of the χ_(c2)(1P) decay to this final state. We measure the η_c(2S) mass and width in K_S^0K^±π^∓ decays, and obtain the values m(η_c(2S))=3638.5±1.5±0.8  MeV/c^2 and Γ(η_c(2S))=13.4±4.6±3.2  MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the χ_(c2)(2P) resonance, but no significant signal is observed.

https://doi.org/10.1103/physrevd.84.012004