1 / 15

Advancements in Hadron Physics: High Precision and Intensity Experimental Approaches

This research exploration focuses on high precision and high intensity methodologies in hadron physics, emphasizing effective field theories, Lattice QCD, and perturbative QCD. It highlights significant experiments and research infrastructures such as HERMES, COMPASS, and PANDA, aimed at uncovering the complex structure of hadrons and their excitations. With collaboration among 140 institutions and 2000 physicists, we leverage advanced accelerator technologies to probe hadron characteristics like spin, magnetic moments, and resonance properties to enhance our understanding of strong interactions.

ifeoma-waters
Télécharger la présentation

Advancements in Hadron Physics: High Precision and Intensity Experimental Approaches

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 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 MAX-lab 0.25 GeV  HERMES – DESY 27.6 GeV e+, e- L = 1032 COSY – FZ Jülich 2.5 GeV p Cooler Ring ELSA (Bonn) 3.5 GeV e, L = 1034 107/s  MAMI (Mainz) 1.5 GeV e, L = 1038 108/s  PANDA – FAIR (GSI) 15 GeV anti – p L = 1032 Cooler Ring COMPASS – CERN μ+, μ-, hadrons L = 1032 DANE e+, e- Collider 16 MeV K L = 1032 GRAAL – ESRF 106/s 1.5 GeV  EUROHORC/NuPECC, Paris, 29/11/04

  2. Methodology • Hadrons = strongly interacting particles • Theory: Quantum Chromodynamics • Exchange of mesons at nuclear physics energy scale • Exchange of gluons at high energies • Experiment: • Scattering of high-energy light or leptons on hadron targets • Observation of hadron excitation spectra EUROHORC/NuPECC, Paris, 29/11/04

  3. Beams Electrons Positrons Muons Photons Resolution Energy Accelerator Cooling Spectrometers Physics potential Polarised beams Polarised targets Lepton microscopy EUROHORC/NuPECC, Paris, 29/11/04

  4. Hadron spectroscopy Ba Ca Atom Nucleon EUROHORC/NuPECC, Paris, 29/11/04

  5. Mainz Microtron MAMI 1.5 GeV electrons 2004/6 2006 2006 2006 EUROHORC/NuPECC, Paris, 29/11/04

  6. Global properties of nucleons & resonances: magnetic moments EUROHORC/NuPECC, Paris, 29/11/04

  7. HERMES - DESY Nucleon Spin Structure EUROHORC/NuPECC, Paris, 29/11/04

  8. The HERMES spectrometer 27.6 GeV e+/e- Recoil Detector, 2005 EUROHORC/NuPECC, Paris, 29/11/04

  9. Hunt for wild QCD animals, Part IPentaquarks Deuteron Target Mass m = 1.53 GeV Intrinsic width = 17 MeV Significance 4.3  EUROHORC/NuPECC, Paris, 29/11/04

  10. Proton spin ? “Spin crisis” EMC - CERN: q ~ 10% • Spin generators: • Quarks • Valence quarks (uud) • Sea quarks (q anti-q) • Gluons (spin 1) • Quark angular momentum • Mathematically: ½ = ½ Sq + DG + Lq “Spin puzzle” HERMES: q ~ 25% HERMES Recoil 2005… COMPASS 2006… ~ 25% EUROHORC/NuPECC, Paris, 29/11/04

  11. Gluon polarization • Photoproduction of high pT –hadron pairs → • Contributing diagrams: • Corresponding asymmetries: EUROHORC/NuPECC, Paris, 29/11/04

  12. Beam:160 GeV µ+ 2 . 108 µ/spill (4.8s/16.2s) Muon filter 2 MWPCs ECal2 & Hcal2 ~50m SM2 Muon filter 1 ECal1 & Hcal1 RICH GEM & MWPCs SciFi SM1 GEM & MWPCs Silicon SciFi Scintillating fibers • Polarization: • Beam: ~80% • Target:<50%> GEM & Straws Micromegas &Drift chambers Polarized target The COMPASS experiment @ CERN EUROHORC/NuPECC, Paris, 29/11/04

  13. 24° ECAL0 12° 4m COMPASS Recoil Detector 2010 EUROHORC/NuPECC, Paris, 29/11/04

  14. Hunt for wild QCD animals, Part II Hybrids & Glueballs @ PANDA QCD QED Confinement Hybrids ? Glueballs ? EUROHORC/NuPECC, Paris, 29/11/04

  15. PANDA – FAIR in 2012 • L = 2⋅1032 cm-2s-1 • p(anti-p) = 1.5 - 15 GeV/c • δp/p ~ 10-5 (e cooling) • tracking of charged particles • measurement and identification of γ, e±, μ±, π±, K±, p, anti-p • high rate capability • fast trigger scheme EUROHORC/NuPECC, Paris, 29/11/04

More Related