6533b7d8fe1ef96bd126a291

RESEARCH PRODUCT

Study of the reactione+e−→J/ψπ+π−via initial-state radiation atBABAR

A. CalcaterraH. AtmacanMarco BombenMatteo NegriniR. BartoldusDouglas WrightMatteo RamaA. G. DenigJ. E. BrauYu. G. KolomenskyH. L. LynchS. BettariniS. PrellGeorge LaffertyJ. F. BenitezSw. BanerjeeC. VossB. N. RatcliffJames H CochranV. PoireauA. P. WagnerMauro MorandinElisa GuidoO. HamonP. C. BloomY. B. PanR. KowalewskiA. Y. RakitinGiulia CasarosaM. A. MazzoniG. WormserA. LusianiE. TorrenceA. N. YushkovG. J. KingS. PacettiR. CowanD. M. StromMaurizio MartinelliL. Li GioiT. LueckGabriele SimiC. L. DavisS. NelsonB. C. WrayG. P. Dubois-felsmannR. SchwierzJ. L. RitchieC. C. YoungV. B. GolubevB. LindquistM. Lo VetereT. M. HongT. SchroederA. AdametzChristopher WestYu I. SkovpenJ. Va’vraW. T. MeyerDenis DerkachW. DunwoodieP. BiassoniF. SimonettoR. H. SchindlerK. Yu TodyshevM. H. SchuneD. SuR. GorodeiskyJ. M. RoneyA. A. SalnikovM. BondioliM. MuneratoHeiko LackerP. TarasE. P. SolodovH. W. WulsinCorrado AngeliniL. PiemonteseU. UwerE. O. OlaiyaR. StroiliG. JacksonV. PrasadM. SimardD. A. RobertsRoberto CalabreseStephen SekulaM. PiccoloD. Lopes PegnaR. ContriChunhui ChenM. GasperoM. CarpinelliE. GabathulerAbner SofferFlorian Urs BernlochnerF. PalomboD. GambaT. S. MattisonF. C. PorterD. J. AsgeirssonJ. OcarizJ. P. ColemanR. AndreassenAndrea Rodriguez PerezR. AyadJames R. WilsonA. KhanH. BriandMaurizio BiasiniB. MalaescuJ. ChauveauR. KroegerJames D. OlsenPatricia R. BurchatRoger BarlowM. FritschJ. R. FryCh YècheG. BatignaniV. P. DruzhininC. BozziG. GrosdidierJ. W. GaryG. RizzoK. HonscheidJ. G. SmithC. A. ChavezE. M.t. PuccioMartino MargoniC. H. ChengG. LynchL. T. KerthMarcello RotondoM. SigamaniB. SpaanR. CheaibM. L. KocianG. EigenR. De SangroS. L. WuOwen Rosser LongA. SeidenP. J. ClarkL. M. CremaldiJ. M. LoseccoM. PosoccoB. EchenardV. E. BlinovW. GradlL. LanceriBjarne StuguMaria Roberta MongeW. H. TokiC. HeartyD. BettoniN. GuttmanD. BernardJ. A. ErnstN. B. SinevPh LerusteC. HastM. L. PerlF. Di LodovicoM. MandelkernG. R. BonneaudJ. A. MckennaR. C. FieldA. M. RulandD. J. LangeG. PireddaD. J. PayneR. GodangE. PaoloniD. J. SummersN. ArnaudA. M. EisnerH. A. NealA. StocchiD. MonorchioC. L. LeeE. Ben-haimU. NauenbergA. M. GabareenG. FinocchiaroV. LuthL. SunM. BellisG. SciollaW. T. FordAlberto CervelliX. C. LouJ. J. WalshD. W. G. S. LeithM. S. AlamB. HamiltonM. EbertG. Hamel De MonchenaultTim AdyeR. D. KassA. SnyderClaudio CampagnariR. J. SobieM. V. PurohitDmytro KovalskyiJ. AlbertI. GarziaJ. P. LeesP. D. DaunceyL. VitaleT. HartmannF. Martinez-vidalD. H. WrightM. MoriiG. CalderiniH. SchröderS. LuitzM. WittgenF. F. WilsonA. RossiD. N. BrownC. PatrignaniP. K. BeheraF. FortiV. TisserandAdrian John BevanI. M. PeruzziDominik MüllerA. R. BuzykaevN. TasneemD. G. HitlinZ. J. GuoG. MarchioriR. F. SchwittersD. R. PeimerAidan Randle-condeJoseph IzenR. FreyD. B. MacfarlaneM. H. KelseyWalter R. InnesS. I. SerednyakovF. BianchiA. E. RubinA. RoodmanP. KimT. J. GershonC. BüngerE. FioravantiT. PulliamRoland WaldiR. M. WhiteM. Franco SevillaC. CartaroA. J. MartinezF. FerroniNicola NeriS. StrackaG. De NardoV. SantoroA. JawaheryG. CibinettoF. LiuD. DujmicElisa ManoniR. SaccoPaul Fraser HarrisonA. J. EdwardsS. PlayferH. H. F. ChoiE. FeltresiA. P. OnuchinPhilippe GrenierP. M. PatelA. V. TelnovStephen Robert WagnerP. RoudeauD. J. BardA. PalanoK. R. SchubertM. T. GrahamR. FacciniA. J.s. SmithJ. M. DorfanF. FerrarottoF. Le DiberderA. HafnerJ. KrosebergSimon AkarJ. D. RichmanG. OnoratoP. SonnekA. OyangurenN. GagliardiI. M. NugentJ. Garra TicoB. T. MeadowsW. F. WangG. RavenM. D. SokoloffD. S. ChaoC. TouramanisG. A. CowanM. DavierO. GrünbergA. M. LutzW. J. WisniewskiH. AhmedS. M. SpanierE. BehnM. VerderiU. MallikT. S. MiyashitaG. M. VitugD. E. HutchcroftC. DallapiccolaT. LeddigH. R. BandW. S. LockmanS. PassaggioM. R. ConveryR. CenciP. LewisA. ZalloEleonora LuppiW. ParkE. GraugesMario GiorgiP. PatteriSridhara DasuB. BhuyanS. SittB. G. FulsomColin JessopR. PrepostM. K. SullivanS. H. RobertsonS. EmeryHerbert KochK. GriessingerR. Baldini-ferroliD. KirkbyG. VasseurK. T. FloodV. ZieglerZ. C. HuardF. AnulliAlessandro GazD. LindemannBruce SchummE. PrencipeB. OberhofM. J. LewczukAndrew LankfordX. NguyenAndrei GritsanE. A. KravchenkoCrisostomo SciaccaD. AstonEnrico RobuttiP. OngmongkolkulT. E. LathamP. Lund

subject

PhysicsNuclear and High Energy PhysicsLuminosity (scattering theory)Mass distribution010308 nuclear & particles physicsState (functional analysis)Radiation01 natural scienceslaw.inventionNuclear physicslaw0103 physical sciences010306 general physicsCollider

description

We study the process e +e -→J/ψπ +π - with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with the BABAR detector at center-of-mass energies 10.58 and 10.54 GeV, and correspond to an integrated luminosity of 454fb -1. We investigate the J/ψπ +π - mass distribution in the region from 3.5 to 5.5GeV/c2. Below 3.7GeV/c2 the ψ(2S) signal dominates, and above 4GeV/c2 there is a significant peak due to the Y(4260). A fit to the data in the range 3.74-5.50GeV/c2 yields a mass value 4245±5(stat)±4(syst)MeV/c2 and a width value 114-15+16(stat) ±7(syst)MeV for this state. We do not confirm the report from the Belle Collaboration of a broad structure at 4.01GeV/c2. In addition, we investigate the π +π - system which results from Y(4260) decay. © 2012 American Physical Society.

https://doi.org/10.1103/physrevd.86.051102