![Page 1: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/1.jpg)
Projected Non-perturbative QCD Studies with CLEO-c
• QCD is felt to be the theory of strong interaction, BUT…• spectroscopy incomplete
• 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
cc
bb
![Page 2: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/2.jpg)
What is missing?
• Missing or unconfirmed states– c’, hc, b, hb, 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), (MZ)…
cc
pp
![Page 3: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/3.jpg)
Predictions for charmed hybrid meson
Mass:Juge, Kuti, & Morningstar (’99) 4.24 GeVCP-PACS (’99) 4.39(.1) GeVMILC (’99) 4.27(.15) GeVMILC (’97) 4.39(.08)(.20) GeVBarnes et al. (’95) Flux tube 4.1-4.2
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*D D0**D D1
**D D2**D DD
1-- 0.2 0.2 17.5 1 0
1-+ 0.1 2.5 26.2 0.5 0
Que
nched lattice
via e+e-
exotic
Estimates byClose and Swanson
![Page 4: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/4.jpg)
Lattice QCD Advances
Title:(2770301-005.eps)Creator:Adobe Illustrator(r) 6.0Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.
•Improved actions•Better understanding of corrections•Anisotropic lattice•Faster, bigger, cheaper computers
e.g. calculationof glueballspectrum byMorningstar& Peardon
![Page 5: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/5.jpg)
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
![Page 6: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/6.jpg)
CLEOIII detectorTitle:(sideview)Creator:(Adobe Illustrator\252 5.0: LaserWriter 8 8.1.1)Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.
![Page 7: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/7.jpg)
Charmonium spectrum
Title:(1600501-008.ps)Creator:Adobe Illustrator(r) 6.0Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.
![Page 8: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/8.jpg)
Bottomonium Spectrum (PDG)
Title:(bottomonium.ps)Creator:Adobe Illustrator(TM) 5.0Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.
Title:ups-table.dviCreator:dvips(k) 5.86 Copyright 1999 Radical Eye SoftwarePreview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.
![Page 9: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/9.jpg)
Near-Term Upsilon Studies with CLEOIII
↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ b hb b ? ? ? ?
• Proposal under consideration for >4 fb-1
• emphasize (1S), (2S), (3S)• inclusive exotic search• b, hb via , hadronic transitions)
MeasuredPossible?
![Page 10: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/10.jpg)
CLEOII inclusive spectrum + theory (Godfrey/Rosner)for (3S)→b decays
Title:/a/lns101/nfs/homes/cleo/ts/newana/bin/plot.epsCreator:HIGZ Version 1.23/09Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.
Br. Ratio x10-4 (3S)→ →b(1S) →b (2S)
Zametakis/Byers (‘83) 22 7.0
Godfrey/Isgur A (‘85) 11 2.2
Godfrey/Isgur B 25 4.7
LNR (‘99) w/o exch 1.4 0.13
LNR (‘99) with exch 0.05 0.4
![Page 11: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/11.jpg)
MARKIII(1986)
BES (1996)
Sometimes it is clear…
The tough life of the fJ(2220)(A case study)
![Page 12: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/12.jpg)
L3 (1997)
??LEAR(1998)
L3 Signal
OPAL (1998)
Other times, not so clear
pp→excitation scan
![Page 13: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/13.jpg)
• Glueball anti-search with Data: – CLEO II: B fJ +-/KSKS < 2.5(1.3) eV
– CLEO III: sub-eV sensitivity
(1S) decays: Tens of events
• Solid PWA of Critical Importance
5000–
850032pp
530023KSKS
1860046K+K-
1300018
3200074
CLEO-CBES
Multiple directions of attack:
fJ(2220) in CLEO-c?
![Page 14: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/14.jpg)
spectrum from J/ X:
– 10-4 sensitivity for narrow resonance
– Efficiency for fJ(2220) ~25%
– CLEO-c has excellent suppression of hadronic bkg: J/X
– 10-4 sensitivity for narrow resonance
– Eg: ~25% efficient for fJ(2220)• Suppress hadronic bkg: J/X
Inclusive Spectrum(Monte Carlo)
![Page 15: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/15.jpg)
Comparison with Other Expts
China:BES II is running now. BES II → BES III upgrade proposedBEPC I → BEPC II upgrade, ~1032 lum. proposedPhysics after 2005 if approval & construction go ahead.
HALL-D at TJNAL:Use p to produce hybrid mesons with exotic Quantum NumbersFocus on light states with JPC= 0+-, 1-+, … Complementary to CLEO-C focus
light glueballs with JPC=0++, 2++, …heavy hybrid mesons
Physics in 2007+ ?
Quantity BES II CLEO-CJ /psi yield 50M > 1000MdE/dx res. 9% 4.9%K/pi separation up to 600 MeV 1500 MeVmomentum res. (500Mev) 1.3% 0.5%Photon resolution (100 Mev) 70 MeV 4 MeVPhoton resolution (1000 Mev) 220 MeV 21 MeVMinimum Photon Energy 80 MeV 30 MeVSolid angle for Tracking 80% 94%Solid angle for Photons 75% 95%
![Page 16: Projected Non-perturbative QCD Studies with CLEO-c QCD is felt to be the theory of strong interaction, BUT… spectroscopy incomplete Exotica predicted,](https://reader030.vdocuments.site/reader030/viewer/2022032800/56649d445503460f94a21836/html5/thumbnails/16.jpg)
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– spectroscopy– J/ decays (glueballs?)– R measurements– D absolute decay rates, form factors– …….
ccbb