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Prospects for Hadron Physics in Europe

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Mechanism of colour confinement. Broken symmetries. Hadron masses ... SciFi. Scintillating. fibers ~50m. COMPASS. Recoil Detector 2010. G nther Rosner ... – PowerPoint PPT presentation

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Title: Prospects for Hadron Physics in Europe


1
Prospects for Hadron Physics in Europe
  • Experimental frontiers
  • High precision
  • High luminosity
  • Polarisation
  • Theoretical symbiosis
  • Effective field theories
  • Lattice QCD
  • Perturbative QCD

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

3
European Laboratories
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 ?
CERN COMPASS µ, µ-, hadrons 200 GeV, L
1032 ALICE
FAIR (GSI) PANDA 15 GeV anti p L 1032 Cooler
Ring PAX CBM
ESRF GRAAL 106/s 1.5 GeV ?
LNF DA?NE e, e- Collider 16 MeV K L 1032
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
5
MAMI upgrade
1.5 GeV electrons
2006
2004/6
Glasgow Tagger upgrade 2006
TAPS
2006
6
WASA _at_ COSY
  • Precision measurements of broken symmetries
  • Isospin ? ? ???
  • CP KL ? ??-ee- ? ? ??-ee-
  • C ? ? ?0ee-

7
The nucleon spin puzzle
COMPASS RHIC
Gluon orbital angular momentum (accessible
through GPDs, difficult)
Gluon polarisation positive (HERMES) negative
(SMC)
HERMES COMPASS PANDA JLab (upgrade)
Quark orbital angular momentum (accessible
through GPDs)
?? ? 0.25
Transversity
HERMES, COMPASS FNAL, PAX
8
Generalised parton distributions
9
HERMES
27.6 GeV e/e-
Recoil Detector, 2006
  • DVCS beam-helicity beam-charge
    asymmetries
  • Extraction of H(x?,?) GPD (model dependent)

10
Gluon polarization
Photoproduction of high-pT hadron pairs
  • Contributing diagrams
  • Corresponding asymmetries

11
COMPASS
Recoil Detector gt 2010
12
Facility for Antiproton and Ion Research
  • L 21032 cm-2s-1
  • p(anti-p) 3 - 15 GeV/c
  • dp/p 10-5 (electron cooling)
  • tracking of charged particles
  • measurement and identification of ?, e,
    µ, p, K, p, anti-p
  • high rate capability
  • fast trigger scheme

gt 2010
13
Physics programme _at_ PANDA
Charmonium spectroscopy (confinement)
glueballs (ggg) hybrids (ccg)
inverted deeply virtual Compton scattering
CP-violation (D ? - sector)
hidden and open charm in nuclei
strange and charmed baryons in the nuclear colour
field
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

15
Search for heavy glueballs
  • 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

Morningstar Peardon, PRD60(1999)34509 Morningsta
r Peardon, PRD56(1997)4043
16
PAX _at_ FAIR
Transversity
gt 2015
  • Phase 1, fixed target operation
  • Polarised antiprotons (p lt 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 gt 0.05, Q2 4, …, 100 GeV2
  • in Drell-Yan processes

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 2009-2011
  • Luminosity ? L 1033 cm-2 s-1
    (at ? production)
  • Energy ? Emax 1.2 GeV
    (per beam) L 1032cm-2 s-1

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!

19
Perspectives
  • gt 2005 Facts
  • New or upgraded accelerator facilities
  • MAX-lab, MAMI C, LHC
  • New or upgraded experiments
  • HERMES, COMPASS, WASA _at_ COSY, ALICE
  • gt 2010 Expectations
  • New or upgraded accelerator facilities
  • FAIR, DAFNE 2
  • New or upgraded experiments
  • PANDA _at_ FAIR, CBM _at_ FAIR, COMPASS 2, KLOE 2
  • gt 2015 Plans
  • New accelerator facility
  • Proton-antiproton collider at FAIR
  • New experiment
  • PAX

a large number of theory groups
Excellent prospects for Hadron Physics in
Europe in the next 10 to 15 years
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