Günther Rosner EINN05, Milos, 24/9/05 1 Prospects for Hadron Physics in Europe Experimental frontiers:  High precision  High luminosity  Polarisation Theoretical symbiosis:  Effective field theories  Lattice QCD  Perturbative QCD

Günther Rosner 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

Günther Rosner EINN05, Milos, 24/9/05 3 TSL: Celsius 1.3 GeV p Cooler Ring MAX-lab 0.25 GeV  LNF: DA  NE e +, e - Collider 16 MeV K L = ESRF: GRAAL 10 6 /s 1.5 GeV  CERN: COMPASS μ +, μ -, hadrons 200 GeV, L = ALICE FAIR (GSI): PANDA 15 GeV anti – p L = Cooler Ring PAX CBM DESY: HERMES 27.6 GeV e +, e - L = (H1, ZEUS) FZ Jülich: COSY 2.5 GeV p Cooler Ring MAMI 1.5 GeV e, L = /s  ELSA 3.5 GeV e, L = /s  European Laboratories

Günther Rosner 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

Günther Rosner EINN05, Milos, 24/9/05 5 MAMI upgrade /6 Glasgow Tagger upgrade GeV electrons + TAPS

Günther Rosner EINN05, Milos, 24/9/05 6 COSY Precision measurements of broken symmetries  I sospin:  ’    CP: K L   +  - e + e -    +  - e + e -  C:    0 e + e -

Günther Rosner EINN05, Milos, 24/9/05 7 The nucleon spin puzzle COMPASS RHIC HERMES, COMPASS FNAL, PAX HERMES COMPASS PANDA JLab (upgrade) Gluon polarisation positive (HERMES) negative (SMC) Gluon orbital angular momentum (accessible through GPDs, difficult) Quark orbital angular momentum (accessible through GPDs) Transversity    0.25

Günther Rosner EINN05, Milos, 24/9/05 8 Generalised parton distributions

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

Günther Rosner EINN05, Milos, 24/9/05 10 Gluon polarization Photoproduction of high-p T hadron pairs  Contributing diagrams:  Corresponding asymmetries:

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

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

Günther Rosner EINN05, Milos, 24/9/05 13 Physics PANDA Charmonium spectroscopy (confinement) glueballs (ggg) hybrids (ccg) inverted deeply virtual Compton scattering strange and charmed baryons in the nuclear colour field hidden and open charm in nuclei CP-violation (D &  - sector)

Günther Rosner EINN05, Milos, 24/9/05 14 Charmonium spectroscopy – a testing ground for confinement Direct formation of charmonium in p bar p Experimental tasks  find  c ‘ (2 1 S 0 ) state  confirm h c (1 1 P 1 ) state  measure transition rates  identify states above D bar D threshold Refine confinement potential (spin dependence)? Challenge for lattice QCD

Günther Rosner EINN05, Milos, 24/9/05 15 Search for heavy glueballs Light glueballs:  candidate f 0 (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/c 2 (less mixing!) Exotic heavy glueballs (no mixing)  m(2 +- ) = 4140(50)(200) MeV  m(0 +- ) = 4740(70)(230) MeV Morningstar & Peardon, PRD60(1999)34509 Morningstar & Peardon, PRD56(1997)4043

Günther Rosner EINN05, Milos, 24/9/05 16 FAIR in Drell-Yan processes Antiproton Polarizer Ring (p  300 MeV/c) Cooler Synchrotron Ring (p < 3.5 GeV/c)  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 GeV 2, x > 0.05, Q 2 = 4, …, 100 GeV 2 > 2015 Transversity

Günther Rosner EINN05, Milos, 24/9/05 17 DA  NE upgrade  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: Luminosity  L ~ cm -2 s -1 (at  production) Energy  E max = 1.2 GeV (per beam) L = cm -2 s -1

Günther Rosner EINN05, Milos, 24/9/05 18 Europe  FP6 HadronPhysics I3, (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,  New proposal:  possible new RIs: ELSA, FAIR  new networks or joint research activities - start planning now  deadline for submission at the beginning of 2007!

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