Hadron Physics with Antiprotons –the PANDA Program
Olaf N. Hartmann
GSI Darmstadt, Germany
INPC 2004 · Göteborg, Sweden
Antiproton Annihilation at Darmstadt
• Charmonium• Gluonic excitations and exotics• Charmed hadrons in matter• Hypernuclei• Electromagnetic processes• Open charm physics
→ multipurpose detector PANDA
Studying the Strong Interaction
Non-perturbative regime of QCD
Quarks are confined Hadron mass >>
Σ quark masses Self-interaction among
gluons
Integration of PANDA in FAIR
FAIR (Facility for Antiproton and Ion Research)
• proton Linac• 100/300 Tm Synchrotron
HESR (High Energy Storage Ring)
• 50 Tm storage ring 1 to 15 GeV/c antiprotons• high luminosity mode: L= 2·1032 cm-2s-1
• high resolution mode: p/p ~ 10-5
• electron cooling/stochastic cooling• internal target
HESR
SuperFRS
NESR
CR
productiontarget
Charmonium Spectroscopy
advantage in :direct formation of allcharmonium states
Crystall Ball
ppOn PANDAs menu:
• Systematic study of the complete spectrum (high statistics, high precision)
• hc
• Radiative deexcitations
• States above the DDbar-threshold
Glueballs
Morningstar, Peardon, PRD 60(99)034509UKQCD, Bali et al., PLB 309(93)378
Mixing with other states maybe less in charm quark mass region
Clean signal: exotic quantum numbers
(Charmed) Hybrids
Mixed state of a quark-antiquark pair and a gluon
Non-exotic hybrids:formation, production
Exotic hybrids:production(JPC = 0+-, 1-+, 2+-)
Exotic charmonia: 3-5 GeV/c2
Charmed Hadrons in Medium
Evidences for modificationsin medium (charged kaons, pions)
D-meson: heavy quark, light antiquark50-160 MeV/c2 splitting
Large charm quark mass↔ little sensitivity to quark condensate→ gluon condensatem = 140 MeV/c2 for Ψ(3770)
Hypernuclei
PANDA detector
Targetspectrometer
2 T (solenoid)
Forwardspectrometer
2 Tm (dipole)
Microvertex-detector(silicon pixel)
Tracking detector• straw tubes• TPC
Particle IDDIRC
Particle IDRICH
ElectromagneticCalorimeter
Muon detectors
Tracking detectorsMini drift chambers
Forward Spectrometer
• Drift chambers
• Electromagnetic Calorimeter
• Hadron Calorimeter
• Muon detectors
Internal target
• Pellets
• Cluster jet
• Wire
Summary
PANDA Physics Program: Charmonium, Glueballs, Hybrids, Charmed Hadrons in Matter, HypernucleiElectromagnetic Processes,Open Charm Physics
PANDA Detector: high resolution for charged and neutral particles in nearly 4π
PANDA Collaboration
Austria - IMEP Wien China
IHEP Beijing, IMP Landzou Germany
U Bochum, U Bonn, TU Dresden, U Erlangen, U Frankfurt/M., U Gießen, GSI, FZJ-IKP, U Mainz, TU München, U Münster, U Tübingen
ItalyU+INFN Brescia, U Catania, INFN Ferrara, LNF, U+INFN Genova, U Milano, U Pavia, U Piemonte Orientale, U+INFN+PT Torino, U+INFN Trieste
Netherlands – KVI Poland
Silesian U, U Cracow, SINS Warsaw
RussiaJINR Dubna, BINP Novosibirsk, PNPI Gatchina, IHEP Protvino
SwedenU Stockholm, U+TSL Uppsala
Switzerland – U Basel United Kingdom
U Edinburgh, U Glasgow USA – Northwestern U