Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted, but not convincingly seen (if not seen, must be explained) Calculations Empirical quark models describe a wide body of data and predict much more. Lattice calculations have few results to date, but incredible promise. S. Dytman, Univ. of Pittsburgh for the CLEO collaboration

What is missing? Missing or unconfirmed states –  c ’, h c,  b, h b, L≥2 states Poorly known information –  widths, ee coupling, form factor – states at mass >4.0 GeV Only strong hints of exotica so far –Glueballs ( ) –Hybrid mesons- light quark(  p,pp), charm(?), bottom(?) Incomplete R data affects (g-2) ,  (M Z )…

Predictions for charmed hybrid meson Mass: Juge, Kuti, & Morningstar (’99) 4.24 GeV CP-PACS (’99) 4.39(.1) GeV MILC (’99) 4.27(.15) GeV MILC (’97) 4.39(.08)(.20) GeV Barnes et al. (’95) Flux tube Decays: Flux tube partial widths (MeV) for M=4.4 GeV Page, Swanson, Szczepaniak (’99) Production: Direct via e+e -  ee ~1 keV Decay from  (1S) BR~10 -3 D*DD*DD 0 ** DD 1 ** DD 2 ** DDD Quenched lattice via e + e - exotic Estimates by Close and Swanson

Lattice QCD Advances Improved actions Better understanding of corrections Anisotropic lattice Faster, bigger, cheaper computers e.g. calculation of glueball spectrum by Morningstar & Peardon

CLEOIII collaboration Albany CalTech Carnegie Mellon Cornell Florida Harvard Illinois Kansas Minnesota Oklahoma Ohio State Pittsburgh Purdue Rochester SMU Syracuse UTPanAmerican Vanderbilt Wayne State 19 institutions ~160 physicists collaboration looks to be largely intact for CLEO-c

CLEOIII detector

Charmonium spectrum

Bottomonium Spectrum (PDG)

Near-Term Upsilon Studies with CLEOIII ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑  b  h b  b ? ? ? ? Proposal under consideration for >4 fb -1 emphasize  (1S),  (2S),  (3S) inclusive exotic search  b, h b via , hadronic transitions) Measured Possible?

CLEOII inclusive spectrum + theory (Godfrey/Rosner) for  (3S)→  b decays Br. Ratio x10 -4  (3S)→ →  b (1S)→  b (2S) Zametakis/Byers (‘83)227.0 Godfrey/Isgur A (‘85)112.2 Godfrey/Isgur B254.7 LNR (‘99) w/o exch LNR (‘99) with exch

MARKIII (1986) BES (1996) Sometimes it is clear… The tough life of the f J (2220) (A case study)

L3 (1997) ?? LEAR (1998) L3 Signal OPAL (1998) Other times, not so clear pp→  excitation scan

Glueball anti-search with  Data: –CLEO II:   B  f J  +  - /K S K S  < 2.5(1.3) eV –CLEO III: sub-eV sensitivity  (1S) decays: Tens of events Solid PWA of Critical Importance 5000–  pp KSKSKSKS K+K-K+K   CLEO-CBES Multiple directions of attack: f J (2220) in CLEO-c?

 spectrum from J/   X: –10 -4 sensitivity for narrow resonance –Efficiency for f J (2220) ~25% –CLEO-c has excellent suppression of hadronic bkg: J/   X –10 -4 sensitivity for narrow resonance –Eg: ~25% efficient for f J (2220) Suppress hadronic bkg: J/   X Inclusive Spectrum (Monte Carlo)

Comparison with Other Expts China: BES II is running now. BES II → BES III upgrade proposed BEPC I → BEPC II upgrade, ~10 32 lum. proposed Physics after 2005 if approval & construction go ahead. HALL-D at TJNAL: Use  p to produce hybrid mesons with exotic Quantum Numbers Focus on light states with J PC = 0 +-, 1 -+, … Complementary to CLEO-C focus light glueballs with J PC =0 ++, 2 ++, … heavy hybrid mesons Physics in ?

Conclusions Much to learn in QCD at large distance –Strong coupling field theory –One of the cutting edges of physics Many advances in theory expected (esp. lattice QCD) CLEO-c can provide many ground- breaking measurements – spectroscopy –J/  decays (glueballs?) –R measurements –D absolute decay rates, form factors –…….