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Prospects for Hadron Physics in Europe

Experimental frontiers: High precision High luminosity Polarisation. Theoretical symbiosis: Effective field theories Lattice QCD Perturbative QCD. Prospects for Hadron Physics in Europe. Topics. Mechanism of colour confinement Broken symmetries Hadron masses Nucleon structure

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Prospects for Hadron Physics in Europe

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  1. Experimentalfrontiers: High precision High luminosity Polarisation Theoreticalsymbiosis: Effective field theories Lattice QCD Perturbative QCD Prospects for Hadron Physics in Europe EINN05, Milos, 24/9/05

  2. Topics • Mechanism of colour confinement • Broken symmetries • Hadron masses • Nucleon structure • (Transition) form factors • Polarisabilities • Spin structure • Generalised parton distributions • Modifications of hadrons in external colour fields • Exotic hadrons • multiquark states • hybrids & glueballs EINN05, Milos, 24/9/05

  3. EuropeanLaboratories MAX-lab 0.25 GeV  DESY:HERMES 27.6 GeV e+, e- L = 1032 (H1, ZEUS) TSL: Celsius 1.3 GeV p Cooler Ring FZ Jülich: COSY 2.5 GeV p Cooler Ring MAMI 1.5 GeV e, L = 1038 108/s  ELSA 3.5 GeV e, L = 1034 107/s  FAIR (GSI): PANDA 15 GeV anti – p L = 1032 Cooler Ring PAX CBM CERN:COMPASS μ+, μ-, hadrons 200 GeV, L = 1032 ALICE ESRF: GRAAL 106/s 1.5 GeV  LNF: DANE e+, e- Collider 16 MeV K L = 1032 EINN05, Milos, 24/9/05

  4. Global hadron properties • Nucleon and meson form factors,transition form factors • (Spin) polarisabilities • Properties of excited nucleons • “Missing” resonances • Magnetic moments • Sum rules (GDH on the neutron) • Meson production and decay  MAX-lab, MAMI, ELSA, COSY, COMPASS EINN05, Milos, 24/9/05

  5. MAMI upgrade 1.5 GeV electrons 2006 2004/6 Glasgow Tagger upgrade2006 + TAPS 2006 EINN05, Milos, 24/9/05

  6. Precision measurements of broken symmetries Isospin: ’   CP: KL +-e+e-   +-e+e- C:   0e+e- WASA @ COSY EINN05, Milos, 24/9/05

  7. The nucleon spin puzzle COMPASSRHIC Gluon orbitalangular momentum(accessible through GPDs, difficult) Gluon polarisationpositive (HERMES)negative (SMC) HERMESCOMPASSPANDAJLab(upgrade) Quark orbitalangular momentum(accessible through GPDs)   0.25 Transversity HERMES, COMPASSFNAL, PAX EINN05, Milos, 24/9/05

  8. Generalised parton distributions EINN05, Milos, 24/9/05

  9. HERMES 27.6 GeV e+/e- Recoil Detector, 2006 • DVCS beam-helicity & beam-charge asymmetries • Extraction of H(x=,)GPD (model dependent) EINN05, Milos, 24/9/05

  10. Gluon polarization Photoproduction of high-pT hadron pairs • Contributing diagrams: • Corresponding asymmetries: EINN05, Milos, 24/9/05

  11. Beam:160 GeV µ+ Muon filter 2 MWPCs ECal2 & Hcal2 ~50m SM2 Muon filter 1 ECal1 & Hcal1 RICH GEM & MWPCs SciFi SM1 GEM & MWPCs Silicon SciFi Scintillating fibers GEM & Straws Micromegas &Drift chambers Polarized target COMPASS Recoil Detector > 2010 EINN05, Milos, 24/9/05

  12. Facility for Antiproton and Ion Research • L = 2⋅1032 cm-2s-1 • p(anti-p) = 3 - 15 GeV/c • δp/p ~ 10-5 (electron cooling) • tracking of charged particles • measurement and identification of γ, e±, μ±, π±, K±, p, anti-p • high rate capability • fast trigger scheme > 2010 EINN05, Milos, 24/9/05

  13. Physics programme @ PANDA Charmonium spectroscopy(confinement) glueballs (ggg)hybrids (ccg) inverted deeply virtualCompton scattering CP-violation(D &  - sector) hidden and open charmin nuclei strange and charmed baryonsin the nuclear colour field EINN05, Milos, 24/9/05

  14. Charmonium spectroscopy –a testing ground for confinement • Direct formation of charmonium in pbarp • Experimental tasks • find c‘ (21S0) state • confirm hc(11P1) state • measure transition rates • identify states above DbarD threshold • Refine confinement potential(spin dependence)? • Challenge for lattice QCD EINN05, Milos, 24/9/05

  15. Light glueballs: candidate f0(1500), 0++; =110MeV no flavour blind decay mix with neighbouring scalar mesons Heavy glueballs flavour blind decay charmed final states! only a few charmed mesons around 3-4 MeV/c2 (less mixing!) Exotic heavy glueballs (no mixing) m(2+-) = 4140(50)(200) MeV m(0+-) = 4740(70)(230) MeV Search for heavy glueballs Morningstar & Peardon, PRD60(1999)34509Morningstar & Peardon, PRD56(1997)4043 EINN05, Milos, 24/9/05

  16. in Drell-Yan processes Antiproton Polarizer Ring (p  300 MeV/c) Cooler Synchrotron Ring (p < 3.5 GeV/c) PAX @ FAIR Transversity > 2015 • Phase 1, fixed target operation: • Polarised antiprotons(p < 3.5 GeV/c) on polarised protons • Phase 2, collider mode: • Polarised antiprotons(p  15 GeV/c) on polarised protons (p  3.5 GeV/c) • s ≤ 200 GeV2, x > 0.05, Q2 = 4, …, 100 GeV2 EINN05, Milos, 24/9/05

  17. Proposed measurements in time-like nucleon form factors polarization of outgoing proton relative phase between electric and magnetic FFs proton angular distribution  2-photon contributions strange baryon FFs Draft LoI on nucleon FFs(21 institutions, 8 countries, ~ 70 scientists) Beam on target: 2009-2011 Luminosity L ~ 1033 cm-2 s-1 (at  production) Energy  Emax = 1.2 GeV (per beam) L = 1032cm-2 s-1 DANE upgrade EINN05, Milos, 24/9/05

  18. Europe • FP6 HadronPhysics I3, 2004-2007 (Coordinator: LNF) • 3 communities: lepton scattering, hadron beams, high energy heavy ion reactions • 11 Research Infrastructures • 140 institutions (mostly universities) participating in Joint Research Activities & Networks • 2000 physicists • FP7, 2007-2011 • New proposal: • possible new RIs: ELSA, FAIR • new networks or joint research activities - start planning now • deadline for submission at the beginning of 2007! EINN05, Milos, 24/9/05

  19. > 2005: Facts New or upgraded accelerator facilities MAX-lab, MAMI C, LHC New or upgraded experiments HERMES, COMPASS, WASA @ COSY, ALICE > 2010: Expectations New or upgraded accelerator facilities FAIR, DAFNE 2 New or upgraded experiments PANDA @ FAIR, CBM @ FAIR, COMPASS 2, KLOE 2 > 2015: Plans New accelerator facility Proton-antiproton collider at FAIR New experiment PAX Perspectives +a large number of theory groups Excellent prospectsfor Hadron Physics in Europein the next 10 to 15 years EINN05, Milos, 24/9/05

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