6533b852fe1ef96bd12ab5f7

RESEARCH PRODUCT

Precise Measurement of thee+e−→π+π−(γ)Cross Section with the Initial State Radiation Method atBABAR

S. BettariniJ. AndersonGeorge LaffertyL. GladneyR. FacciniV. B. GolubevB. LindquistF. FerrarottoA. J. LankfordF. Le DiberderAbner SofferG. P. Dubois-felsmannP. J. ClarkH. W. WulsinJ. D. RichmanCh YècheR. AyadR. AyadB. J. WogslandF. U. BernlochnerG. J. KingJ. I. YiJ. SchwieningJ. MarksG. RizzoA. StocchiF. SimonettoR. H. SchindlerA. HaukeS. B. ZainG. De NardoJ. A. KolbP. LundG. A. CowanX. C. LouJ. J. WalshA. VolkMaria Roberta MongeA. M. RahimiT. E. LathamC. M. HawkesC. LuH. MarsiskeJ. A. MckennaElisa GuidoH. AtmacanD. N. BrownP. BiassoniE. O. OlaiyaR. KroegerA. PetrellaE. PaoloniJ. Firmino Da CostaA. T. WatsonA. M. EisnerL. Li GioiJ. L. RitchieJames R. WilsonJ. Va’vraL. O. WinstromM. A. SaeedC. HeartyD. J. SummersV. AzzoliniM. TibbettsM. SchramM. BombenR. J. SobieC. VoenaL. VitaleF. Martinez-vidalDominik MüllerH. BriandD. P. StokerF. PalomboVivek SharmaX. R. ChenE. PrencipeG. Hamel De MonchenaultA. A. SalnikovColin JessopL. DongW. J. WisniewskiR. ContriS. AhmedD. GambaMaria A. NagelT. TanabeJames D. OlsenL. T. KerthG. M. VitugR. GodangR. GodangR. FreyP. FranchiniMarcello RotondoM. SigamaniT. S. MattisonO. HamonB. C. WrayD. E. HutchcroftC. DallapiccolaM. V. PurohitJ. AlbertM. MorgantiR. BartoldusMatteo NegriniRoberto CalabreseL. M. CremaldiM. H. KelseyC. HastD. J. LangeShawn Wesley HendersonV. EygesS. ParamesvaranM. A. MazurJ. MerkelE. BaracchiniM. WittgenB. StuguS. PassaggioM. EbertJ. IlicDouglas WrightM. BondioliR. PrepostR. NogowskiD. M. StromG. PireddaR. AndreassenG. MarchioriH. R. BandM. MoriiL. A. CorwinA. LazzaroD. SuM. J. CharlesJ. F. BenitezYu I. SkovpenT. M. KarbachA. M. RulandS. K. SwainV. LepeltierM. MuneratoHeiko LackerJ. OcarizW. S. LockmanB. SpaanD. H. WrightP. PatteriC. PatrignaniB. EchenardG. MancinelliY. Y. GaoM. PiccoloT. J. GershonM. T. AllenA. D. BukinP. Del Amo SanchezG. EigenM. CarpinelliI. M. NugentShu LiAidan Randle-condeJ. Garra TicoJ. W. GaryP. KimD. BernardR. K. YamamotoG. BatignaniR. M. WhiteM. Franco SevillaP. C. BloomC. A. HeuschChunhui ChenJ. P. MorrisL. LanceriDmytro KovalskyiMaurizio BiasiniV. TisserandA. PalanoW. KozaneckiM. R. ConveryJ. P. BurkeM. MandelkernD. G. HitlinD. BaileyG. CastelliJ. P. LeesM. FritschM. ZhaoE. Ben-haimA. C. WrenA. OyangurenM. BattagliaF. BianchiI. OfteA. PerezG. JacksonJ. ChauveauR. C. FieldG. OnoratoB. W. DrummondW. F. WangM. DavierM. J. LewczukM. BarrettH. SchröderS. LuitzN. Lopez-marchJ. StrubeS. SchenkJ. F. HirschauerG. FinocchiaroV. LuthH. L. LynchB. G. FulsomPhilippe GrenierM. Lo VetereX. PrudentJ. M. LoseccoM. S. AlamC. TouramanisOwen Rosser LongA. SeidenG. B. MohantyJ. A. ErnstZ. YasinL. PiemonteseKenji HamanoR. RahmatA. SnyderA. D'orazioA. J. MartinezNicola NeriP. RoudeauF. Di LodovicoG. LynchM. L. KocianJ. R. FryC. H. ChengF. F. WilsonR. De SangroS. L. WuX. R. ChenJ. M. ThompsonLianqi WangJ. C. DingfelderV. E. BlinovF. FangW. H. TokiJ. PrendkiN. B. SinevBogdan MalaescuK. TackmannK. Yu TodyshevM. H. SchuneT. SchalkU. UwerG. GrosdidierE. TorrenceL. SunR. StroiliAlberto CervelliA. P. WagnerMauro MorandinBenjamin Henry HoobermanG. R. BonneaudB. T. MeadowsE. GabathulerG. SciollaI. L. OsipenkovJ. E. BrauW. R. InnesW. GradlF. C. PorterD. J. AsgeirssonG. RavenPaul JacksonM. D. SokoloffV. SantoroM. WeaverR. Baldini-ferroliD. KirkbyG. VasseurP. R. BurchatM. A. MazzoniG. WormserE. SalvatiAdrian John BevanJ. KaminskiStephen Jacob SekulaD. W. G. S. LeithP. H. FisherY. KaryotakisH. KaganC. VociD. DujmicS. M. SpanierM. L. PerlZ. J. GuoK. WackerG. Della RiccaY. B. PanJoseph IzenYu. G. KolomenskyG. CalderiniElisa ManoniS. PlayferC. P. O'gradyR. KowalewskiA. CalcaterraA. RoodmanM. SpitznagelB. N. RatcliffE. FioravantiT. SchroederK. T. FloodA. V. TelnovCrisostomo SciaccaD. AstonS. NelsonF. LiuD. A. DollM. VerderiRoland WaldiR. SchwierzF. FerroniW. DunwoodieM. J. KobelSw. BanerjeeA. PetzoldC. A. WestDenis DerkachU. MallikR. SaccoA. J. EdwardsB. FranekH. L. SnoekC. CartaroD. J. PayneU. NauenbergH. B. CrawleyPaul Fraser HarrisonT. S. MiyashitaJ. SerranoJ. DorfanI. EschrichM. K. SullivanL. WangM. ZitoP. M. PatelHyun-chul KimStephen Robert WagnerJ. M. TuggleA. J.s. SmithT. PiatenkoM. BellisK. R. SchubertC. C. YoungK. SuzukiW. T. MeyerClaudio CampagnariM. SimardD. A. RobertsA. M. LutzPrafulla Kumar BeheraB. AubertK. MishraS. H. RobertsonR. F. SchwittersE. GraugesMario GiorgiD. B. MacfarlaneH. NicholsonS. MorgantiSridhara DasuS. SittRoger BarlowMartino MargoniE. FeltresiF. FortiR. CenciC. O. VuosaloA. ZalloHerbert KochEleonora LuppiS. CurryC. J. SchillingW. ParkH. JasperOlga IgonkinaA. M. GabareenW. T. FordTim AdyeR. D. KassT. LueckGabriele SimiV. ZieglerA. HafnerC. L. DavisJ. KrosebergSilvano TosiG. CavotoR. GametE. I. RosenbergJ. P. ColemanN. GagliardiF. AnulliAlessandro GazS. StrackaM. LuA. JawaheryPh LerusteHung-wen LiuN. ArnaudEnrico RobuttiP. OngmongkolkulA. P. OnuchinI. BinghamA. K. YarrituB. PanI. M. PeruzziD. BettoniE. LatourMaurizio MartinelliT. W. BeckS. I. SerednyakovA. E. RubinMario PelliccioniT. J. WestG. CibinettoV. SordiniJ. M. RoneyLuca ListaK. E. AlwynD. J. BardM. PappagalloN. SoniJ. G. SmithP. SonnekK. J. KnoepfelE. M.t. PuccioMatteo RamaS. PrellV. P. LombardoJames H CochranV. PoireauA. LusianiA. CecchiH. H. F. ChoiT. M. HongS. EmeryR. EckmannC. K. ClarkeA. AdametzR. MessnerP. TarasE. P. SolodovM. GasperoE. C. MartinH. A. NealD. MonorchioN. L. BlountBruce SchummH. W. ZhaoP. D. DaunceyT. HartmannX. NguyenL. BosisioMirco AndreottiA. R. BuzykaevAndrei GritsanD. A. MilanesF. RengaS. PacettiR. CowanL. EsteveI. NarskyM. T. GrahamJ. E. WatsonCorrado AngeliniB. BhuyanD. Lopes PegnaA. KhanV. P. DruzhininC. BozziK. HonscheidC. A. ChavezM. Posocco

subject

PhysicsParticle physicsAnnihilationMuonMeson010308 nuclear & particles physicsElectron–positron annihilationGeneral Physics and Astronomy01 natural sciencesB-factoryNuclear physicsPionPair production0103 physical sciencesHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsLepton

description

A precise measurement of the cross section for the process e^+e^- → K^+K^-(γ) from threshold to an energy of 5 GeV is obtained with the initial-state radiation (ISR) method using 232  fb^(-1) of data collected with the BABAR detector at e^+e^- center-of-mass energies near 10.6 GeV. The measurement uses the effective ISR luminosity determined from the e^+e^- → μ^+μ^-(γ)γ_(ISR) process with the same data set. The corresponding lowest-order contribution to the hadronic vacuum polarization term in the muon magnetic anomaly is found to be a_μ^(KK,LO)=(22.93 ± 0.18_(stat) ± 0.22_(syst))×10^(-10). The charged kaon form factor is extracted and compared to previous results. Its magnitude at large energy significantly exceeds the asymptotic QCD prediction, while the measured slope is consistent with the prediction.

https://doi.org/10.1103/physrevlett.103.231801