Physics with PANDA at FAIR

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1 Physics with PANDA at FAIR Inti Lehmann University of Glasgow Tbilisi, Sept. 5th, 2006

2 Some Open Questions in generation of hadron masses spin puzzle Non-Perturbative QCD strong interaction at large distances multi-quark systems (flux tube animation by D. Leinweber et al.)

3 Charmonium Spectroscopy positronium of QCD narrow states transition between massless and heavy quark limit well understood!??

4 Model Predictions in Charmonium Two narrow states expected, but the 1D multiplet is theoretically close to degenerate, near the 3 D 1 y (3770). T.Barnes, S. Godfrey, E.S. Svanson; hep-ph/ (2005)

5 Who ordered that? X(3872)

6 Gluonic Excitations hybrids: ordinary quark states containing excited glue glueballs: gluonic states without valence quark contribution

7 light quark hybrids: Hybrids exp. candidates: 1 (1400), 1 (1600),... problem: mixing charmed hybrids: prediction: m = GeV/c 2, narrow lowest state: 1 -+ exotic => no mixing decay: 1 -+ c + ( ) l=0 J/ + e + e - (C. Michael, hep-lat/ ) also 0 - -, 0 +- and 2 +- do not mix

8 Glueball Predictions Lattice QCD calculations by Flux tube calc. by Morningstar and Peardon; Brower, Mathur and Tan. PRD60 (1999) Nucl.. Phys. B587 (2000)249

9 Glueballs light glueballs: exp. candidate: f 0 (1500) well established ordinary quantum numbers problem: mixing, Crystal Barrel f 0 (1500) glueballs above 3 GeV/c 2 : few mesonic states less mixing smaller width exotic states: 2 +-, 0 +- do not mix

10 In-Medium Mass Modifications HADES, CBM:,, studies PANDA: extension to the charm sector K D + K + K D D +

11 Extension of the Nuclear Chart Strangess Neutron Number Do we understand the YN interaction?

12 Other Topics Drell-Yan processes Time-like form factors Hard exclusive processes

13 What is Experimentally Needed? gluon-rich environment proton-antiproton anihilations

14 What is Experimentally Needed? gluon-rich environment proton-antiproton anihilations all quantum numbers formation exp. i.e. large acc. detector, fixed target J PC = J = 0,2,.. C = + J = 1,.. C = -

15 What is Experimentally Needed? gluon-rich environment proton-antiproton anihilations all quantum numbers formation exp. i.e. large acc. detector, fixed target precise resonance scan high precision hadron beam (cooled) 100 CBall ev./2 MeV c1 CBall E E 835 ev./pb MeV E CM

16 What is Experimentally Needed? gluon-rich environment proton-antiproton anihilations all quantum numbers formation exp. i.e. large acc. detector, fixed target precise resonance scan high precision hadron beam (cooled) high statistics samples high luminosity and prod. cross section Crystal Barrel f 0 (1500)

17 What is Experimentally Needed? gluon-rich environment proton-antiproton anihilations all quantum numbers formation exp. i.e. large acc. detector, fixed target precise resonance scan high precision hadron beam (cooled) high statistics samples high luminosity and prod. cross section physics topics energy range p p = GeV/c Crystal Barrel f 0 (1500) s-hyperon, c-meson, c-hyperon pairs hybrids c-hybrids glueballs charmonium M [GeV/c 2 ]

18 FAIR: Facility for Antiproton and Ion Research Existing GSI Facilities

19 FAIR: Probing the Intensity Frontier with Secondary Beams existing GSI Primary Beams /s; 1.5 GeV/u; 238 U /s 238 U 73+ up to 35 GeV/u 3x10 13 /s 30 GeV protons future FAIR Secondary Beams broad range of radioactive beams up to GeV/u; up to factor higher in intensity than presently antiprotons 3-30 GeV Storage and Cooler Rings radioactive beams antiprotons 1-15 GeV/c, stored and cooled Technical Challenges cooled beams, rapid cycling superconducting magnets, etc.

20 Antiproton Anihilations at Darmstadt PANDA charmonium spectroscopy gluonic excitations (hybrids, glueballs) open and hidden charm in nuclei -ray spectroscopy of hypernuclei J/ -N scattering inverted DVCS...

21 Target Generator Muon Counters Solenoid Magnet Dipole Magnet EM and Hadron Calorimeters RICH Drift or Wire Chambers Beam Interaction Point

22 Pellets or Clusters Coil Disk DIRC EMC Barrel DIRC EMC Straws or TPC MVD Mini-Drift Chambers EMC Beam

23 Glasgow Activities: Field Calculations x z Clamping: field decoupling homogeneity space for muon counters y z

24 Glasgow Activities: Orbit Errors Field alignment difficult Uncertainties of the magnet fields 3D Tosca magnetic field calculations B max = 2.9T B max = 1.1T Small misalignment of the solenoid (0.2 o = 3.5mrad): - trajectory shift up to 23mm - beam-momentum dependent Saturation effects in the dipole: - small trajectory shift ~0.4mm

25 Glasgow Activities: PANDA GRID

26 Glasgow Activities: PANDA GRID

27 Glasgow Activities: Cherenkov Disc DIRC Compact focussing Chrom. TOP Option

28 Glasgow Activities: Cherenkov RICH HERMES RICH Results Aerogel n=1.03 C 4 F 10 n=1.0014

29 Summary Hadron Physics challenging field full of open questions PANDA Experiment studies with unprecedented precision: strong interaction at large distancies new forms of matter large collaboration, well on track Still a lot to do!

30 PANDA Collaboration Universität Basel, IHEP Beijing, Ruhr-Universität Bochum, Universität Bonn, Università di Brescia + INFN, Università di Catania, University of Silesia, University Cracow, GSI Darmstadt, TU Dresden, JINR Dubna, JINR Dubna, University Edinburgh, Universität Erlangen, Northwestern University, INFN Sezione di Ferrara, Universität Frankfurt, LNF-INFN Frascati, INFN Sezione di Genova,Università di Genova, Universität Gießen, University of Glasgow, KVI Groningen, Institute of Physics Helsinki, FZ Jülich - IKP I, FZ Jülich - IKP II, IMP Lanzhou, Universität Mainz, Università di Milano, TU München, Universität Münster, BINP Novosibirsk, IPN Orsay, Università di Pavia, PNPI Gatchina St. Petersburg, IHEP Protvino, Stockholm University, Università di Torino, Università de Piemonte, Università di Trieste + INFN, Universität Tübingen, Uppsala Universitet, TSL Uppsala, Universidad de Valencia, Stefan Meyer Institut für subatomare Physik, Vienna, SINS Warschau 15 countries 47 institutes 370 scientists