James Ritman Univ. Giessen PANDA: An Experiment To Investigate Hadron Structure Using Antiproton Beams • Overview of the GSI Upgrade • Overview of the PANDA Physics Program • Exotic Hadrons in the Charm Mass Region • HESR: High Energy Storage Ring • The PANDA Detector
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James Ritman Univ. Giessen PANDA: An Experiment To Investigate Hadron Structure Using Antiproton Beams Overview of the GSI Upgrade Overview of the PANDA.
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James Ritman Univ. Giessen
PANDA: An Experiment To Investigate Hadron Structure
Using Antiproton Beams
• Overview of the GSI Upgrade
• Overview of the PANDA Physics Program
• Exotic Hadrons in the Charm Mass Region
• HESR: High Energy Storage Ring
• The PANDA Detector
James Ritman Univ. Giessen
The GSI Future Project
• Heavy Ion Physics: hot and dense nuclear matter
• Nuclear Structure: paths of nucleo-synthesis
• Ion and laser induced Plasma: very high energy densities• Atomic physics: QED, strong EM fields, Ion-Matter interactions• Physics with Antiprotons properties of the strong force
Project approved Feb 2003
James Ritman Univ. Giessen
What Do We Want To Know?
• Why don‘t we observe isolated quarks?Q-Q potential in the charmonioum system
• Are there other forms of hadrons?e.g. Hybrids qqg or Glueballs gg
• Why are hadrons so much heavier than their constituents?
p-A interactions
James Ritman Univ. Giessen
Why Don’t We See Isolated Quarks?
James Ritman Univ. Giessen
Charmonium – the Positronium of QCD
3D2
2900
3100
3300
3500
3700
3900
4100
c(3590)
c(2980)
hc(3525)
(3097)
(3686)
(3770)
(4040)
0(3415)
1(3510) 2(3556)
3D1
3D3
1D2
3P2(~ 3940)
3P1(~ 3880)
3P0(~ 3800)
(~ 3800)
1 fm
C C
~ 600 meV -1000
-3000
-5000
-700011S
0
13S1
21S0 23S
121P
1 23P2
23P1
23P0
031S
0 31D
2 33D2
33D1
33D2
Ionisationsenergie33S
1
e+ e-0.1 nm
Binding energy [meV]
Mass [MeV]
DDThreshold
8·10-4 eV
10-4 eV
• Positronium • Charmonium
James Ritman Univ. Giessen
Probe large separations with highly excited qq states_