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. 2002 Feb 4;88(5):052001.
doi: 10.1103/PhysRevLett.88.052001. Epub 2002 Jan 16.

Production of prompt charmonia in e(+)e(-) annihilation at square root of s approximately equals 0.6 GeV

K Abe  1 K AbeT AbeI AdachiByoung Sup AhnH AiharaM AkatsuY AsanoT AsoT AushevA M BakichY BanE BanasS BehariP K BeheraA BondarA BozekT E BrowderB C K CaseyP ChangY ChaoB G CheonR ChistovS-K ChoiY ChoiL Y DongJ DragicA DrutskoyS EidelmanY EnariF FangH FujiiC FukunagaM FukushimaN GabyshevA GarmashT GershonA GordonR GuoJ HabaH HamasakiF HandaK HaraT HaraH HayashiiM HazumiE M HeenanI HiguchiT HokuueY HoshiS R HouW-S HouH-C HuangY IgarashiT IijimaH IkedaK InamiA IshikawaH IshinoR ItohH IwasakiY IwasakiP JalochaH K JangJ H KangJ S KangP KapustaN KatayamaH KawaiN KawamuraT KawasakiH KichimiD W KimHeejong KimH J KimH O KimHyunwoo KimS K KimT H KimK KinoshitaS KobayashiH KonishiP KrokovnyR KulasiriS KumarA KuzminY-J KwonJ S LangeG LederS H LeeD LiventsevR-S LuJ MacNaughtonD MarlowT MatsubaraS MatsumotoT MatsumotoY MikamiK MiyabayashiH MiyakeH MiyataG R MoloneyS MoriT MoriT NagamineY NagasakaY NagashimaE NakanoM NakaoJ W NamZ NatkaniecK NeichiS NishidaO NitohS NoguchiT NozakiS OgawaT OhshimaT OkabeS OkunoW OstrowiczH OzakiP PakhlovH PalkaC S ParkC W ParkH ParkK S ParkM PetersL E PiilonenN RootK RybickiJ RyukoH SagawaY SakaiH SakamotoM SatapathyA SatpathyS SchrenkS SemenovK SenyoM E SeviorH ShibuyaB ShwartzS StanicA SugiA SugiyamaK SumisawaT SumiyoshiJ-I SuzukiK SuzukiS SuzukiS K SwainT TakahashiF TakasakiM TakitaK TamaiN TamuraJ TanakaM TanakaY TanakaG N TaylorY TeramotoM TomotoT TomuraS N ToveyK TrabelsiW TrischukT TsuboyamaT TsukamotoS UeharaK UenoY UnnoS UnoY UshirodaS E VahsenK E VarvellC C WangC H WangJ G WangM-Z WangY WatanabeE WonB D YabsleyY YamadaM YamagaA YamaguchiY YamashitaM YamauchiK YoshidaY YuanY YusaC C ZhangJ ZhangH W ZhaoY ZhengV ZhilichD ZontarBelle Collaboration
Affiliations

Production of prompt charmonia in e(+)e(-) annihilation at square root of s approximately equals 0.6 GeV

K Abe et al. Phys Rev Lett. .

Abstract

The production of prompt J/psi, psi(2S), chi(c1), and chi(c2) is studied using a 32.4 fb(-1) data sample collected with the Belle detector at Upsilon(4S) and at 60 MeV below the resonance. The yield of prompt J/psi mesons in the Upsilon(4S) sample is compatible with that of continuum production; we set an upper limit B(Upsilon(4S)-->J/psiX) < 1.9 x 10(-4) at the 95% confidence level, and find sigma(e(+)e(-)-->J/psiX) = 1.47 plus/minus 0.10 plus/minus 0.13 pb. The cross sections for prompt psi(2S) and direct J/psi are measured. The J/psi momentum spectrum, production angle distribution, and polarization are studied.

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