Hadron Structure & Spectroscopy

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Experimental frontiers: High precision High intensity Theoretical symbiosis: Effective field theories Lattice QCD Perturbative QCD HadronPhysics I3: 11 Research infrastructures 140 Institutions 2000 Physicists. Hadron Structure & Spectroscopy. Celsius 1.3 GeV p Cooler Ring. - PowerPoint PPT Presentation

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  • Hadron Structure& SpectroscopyExperimental frontiers:High precisionHigh intensity

    Theoretical symbiosis:Effective field theoriesLattice QCDPerturbative QCD

    HadronPhysics I3:11 Research infrastructures140 Institutions2000 Physicists

    Celsius1.3 GeV pCooler RingMAX-lab0.25 GeV DANEe+, e- Collider16 MeV KL = 1032GRAAL ESRF106/s 1.5 GeV COMPASS CERN+, -, hadronsL = 1032PANDA FAIR (GSI)15 GeV anti pL = 1032Cooler RingHERMES DESY27.6 GeV e+, e-L = 1032COSY FZ Jlich2.5 GeV pCooler RingMAMI (Mainz)1.5 GeV e, L = 1038108/s

    ELSA (Bonn)3.5 GeV e, L = 1034107/s

    EUROHORC/NuPECC, Paris, 29/11/04

  • MethodologyHadrons = strongly interacting particlesTheory: Quantum Chromodynamics Exchange of mesons at nuclear physics energy scaleExchange of gluons at high energiesExperiment:Scattering of high-energy light or leptons on hadron targetsObservation of hadron excitation spectra

    EUROHORC/NuPECC, Paris, 29/11/04

  • Lepton microscopyBeamsElectronsPositronsMuonsPhotonsResolutionEnergyAcceleratorCoolingSpectrometersPhysics potentialPolarised beamsPolarised targets

    EUROHORC/NuPECC, Paris, 29/11/04

  • Hadron spectroscopy Ba CaAtomNucleon

    EUROHORC/NuPECC, Paris, 29/11/04

  • Mainz Microtron MAMI20062004/6200620061.5 GeV electrons

    EUROHORC/NuPECC, Paris, 29/11/04

  • Global properties of nucleons & resonances: magnetic moments

    EUROHORC/NuPECC, Paris, 29/11/04

  • HERMES - DESYNucleon Spin Structure

    EUROHORC/NuPECC, Paris, 29/11/04

  • The HERMES spectrometer27.6 GeV e+/e-Recoil Detector, 2005

    EUROHORC/NuPECC, Paris, 29/11/04

  • Hunt for wild QCD animals, Part I PentaquarksMass m = 1.53 GeVIntrinsic width = 17 MeVSignificance 4.3 Deuteron Target

    EUROHORC/NuPECC, Paris, 29/11/04

  • Spin generators:QuarksValence quarks (uud)Sea quarks (q anti-q)Gluons (spin 1)Quark angular momentum

    Mathematically:Proton spin ? = Sq + DG + Lq ~ 25%COMPASS 2006HERMES Recoil 2005Spin crisis EMC - CERN: q ~ 10%Spin puzzle HERMES: q ~ 25%

    EUROHORC/NuPECC, Paris, 29/11/04

  • Gluon polarizationPhotoproduction of highpT hadron pairs Contributing diagrams:

    Corresponding asymmetries:

    EUROHORC/NuPECC, Paris, 29/11/04

  • The COMPASS experiment @ CERN

    EUROHORC/NuPECC, Paris, 29/11/04

  • COMPASS Recoil Detector2010

    EUROHORC/NuPECC, Paris, 29/11/04

  • Hunt for wild QCD animals, Part II Hybrids & Glueballs @ PANDAQEDQCDConfinementHybrids ?Glueballs ?

    EUROHORC/NuPECC, Paris, 29/11/04

  • PANDA FAIR in 2012tracking of charged particlesmeasurement and identification of , e, , , K, p, anti-phigh rate capabilityfast trigger scheme L = 21032 cm-2s-1 p(anti-p) = 1.5 - 15 GeV/c p/p ~ 10-5 (e cooling)

    EUROHORC/NuPECC, Paris, 29/11/04