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Prospects for Hadron Physics in Asia

Prospects for Hadron Physics in Asia. H. Shimizu Laboratory of Nuclear Science Tohoku University. ,. QCD Hadron Physics research. Diversity of Hadron Physics. confinement. chiral symmetry. phase transition at high temperature HI beam. precursors to chiral transition in nuclei

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Prospects for Hadron Physics in Asia

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  1. Prospects for Hadron Physics in Asia H. Shimizu Laboratory of Nuclear Science Tohoku University ,

  2. QCD Hadron Physics research Diversity of Hadron Physics confinement chiral symmetry phase transition at high temperature HI beam precursors to chiral transition in nuclei g beam hadron beam in free space in nuclear matter spectroscopy the most basic study

  3. RCNP, Osaka 400MeV cyclotron IHEP, Beijing BEPC BEPC II LNS, Sendai Tohoku Univ. 1.2GeV HIRFL Lanzhou Univ. CSRs KEK B factory PAL, Pohang 2.5GeV RIKEN K540 cyclotron RIBF SSRF, Shanghai 3.5GeV SPring-8 8GeV Major accelerators for hadron physics in Asia J-PARC 50GeV 12GeV PS

  4. Hadron Physics with e+e- collider machines

  5. KEK ~ 50km NE from Tokyo

  6. KEKB for the study of CPV 3.5 GeV 8 GeV KEKB turned out to be a good laboratory to search for new hadrons as well. world highest luminosity hadron spectroscopy

  7. Observation of X(3872) at Belle found in B meson decays out of 152M data narrow width multiquark molecular state? diquark-antidiquark bound state?

  8. Super B factory plan at KEK New charmed hadrons found at Belle up to now • Towards higher luminosity More RF power New beam pipe Damping ring Increase beam currents 1.6 A (LER) / 1.2 A (HER) → 9.6 A (LER) / 4.1 A (HER) Linac upgrade • key issue: • highest luminosity

  9. IHEP, Beijing BEPC: Research on charm and t lepton physics 200m LINAC circumference=240m BESII

  10. Recent results from BESII • Threshold enhancements: new hadrons? M=1859MeV G<30MeV M=2075MeV G=90MeV PRL91(2003)022001, PRL93(2004)112002 • Study of light scalar mesons s, k, f0(1370), f0(1500), f0(1710), f0(1790), …. s: PLB598(2004)149 Existence of s is confirmed. • …..

  11. BEPCII project design goals BESIII BSRF 250mA@2.5GeV Upgrade: by the end of 2006

  12. Hadron Physics with hadron beams

  13. HIRFL, Lanzhou Heavy Ion Research Facility in Lanzhou

  14. Experimental setup at HIRFL-CSR Cooling Storage Ring

  15. CSR performances

  16. Physics goals at CSR • Radioactive ion beam physics • Few body study with HI beam (<1.1GeV/u) and p beam (<2.8GeV) • High charge state of atomic physics • Physics under high density and temperature • Studies on mesons and baryons • Search for multi-quark states • …..

  17. RIKEN has discovered a variety of anomalous nuclear phenomena New Element 04 July 23 57 fb

  18. RIKEN RIBF Project Experimental arrangement of beam lines Phase II: Phase I: 350MeV/u up to U 1st beam in 2006 SCRIT Phase 0:1987~ 135MeV/u for light nuclei

  19. Hadron Beam Facility Materials and Life Science Experimental Facility Nuclear Transmutation 500 m Neutrino to Kamiokande 3 GeV Synchrotron (25 Hz, 1MW) 50 GeV Synchrotron (0.75 MW) Linac (350m) J-PARC Facility J-PARC = Japan Proton Accelerator Research Complex Joint Project between KEK and JAERI

  20. J-PARC Phase 1 & 2 • The budget for about 2/3 of the entire project has been approved by the Japanese government from JFY2001 as Phase 1. • Phase 1 (~151 billion Yen = 1.1 billion Euro) consists of major accelerator components and a part of experimental facilities. commissioning in 2007

  21. J-PARC: the High Intensity Frontier • J-PARC aims for the high intensity frontier for • Materials/life sciences (3GeV), and • Nuclear/particle physics (50GeV) • High intensity proton beam leads to high intensity secondary (neutron, meson, …) beam. • The power (= Energy x Current) is a good measure. • Neutrons: from 0.16MW (ISIS) to 1MW • K mesons: 5 to 10 times more intense than existing BNL-AGS. World’s Proton Accelerators

  22. Hadron Physics at J-PARC • Kon decays CP violation in • Hypernuclear physics high resolution spectroscopy of L nuclei g-ray spectroscopy in L nuclei spectroscopy of S=-2 system with (K-, K+) reactions • Hadrons in the nuclear medium deeply-bound kaonic nuclear states -> cold &dense nuclear matter vector mesons in nuclear matter • Exotic hadrons pentaquarks • K-(1.8 GeV/c) • (K-,K+),S=-2 • K+(0.8 GeV/c) • K+ rare decay • K-(1.1 GeV/c) • (K-,p-), S=-1 LOI: 478 physicists with 2/3 from outside Japan

  23. Hadron Physics with photon beams

  24. SPring-8 (Super Photon ring-8 GeV) • Third-generation synchrotron radiation facility • Circumference: 1436 m • 100 mA (ex610-9 m·rad) • 62 beamlines

  25. 2.4 GeV 8 GeV LEPS beam Energy Spectrum

  26. New LEPS beam line • 2 operation modes 1. high intensity mode a high power laser + round beam technique 2. high energy mode X rays from SPring-8, bent by ~180o with 10 diamond mirrors from another small accelerator

  27. High energy mode reflectivity of diamond mirrors diamond crystal mirrors reflectivity of mirrors for 100 eV photons: ~80% for a reflection angle of 200 ~10% for 100 eV photons bent by 1800 7.4 GeV LEPS beam

  28. High energy CBS provides a qusi-monochromatic g beam

  29. Sales points for new LEPS beam • The cleanest g beam in the world at a 7 GeV energy region Good for experiments detectingsuper-forward events • A polarized g beam with the highest polarization in the world Polarization of vector mesons in precursors to the chiral transition Unique experiments (e.g.: a measurement of birefringence in a strong magnetic field)

  30. Pohang Accelerator LaboratoryKorea Bremsstrahlung beam line under consideration 2.5 GeV Storage Ring Pohang Light Source

  31. Shanghai Synchrotron Radiation Facility (SSRF) Construction started in Dec. 2004.

  32. SSRF Layout • 100MeV Linac • 3.5GeV Booster • 3.5GeV Storage Ring circumference: 432m Shanghai Laser Electron Gamma Source (SLEGS) High intensity quasi-monochromatic MeVg-rays

  33. Summary • e+e- collider machines High luminosity brings discoveries of new hadrons, exotics, and new physics as KEKB and BEPC have proved. BEPC II is under construction toward higher luminosity. The superKEKB project will be proposed in 2008, with preceding minor upgrade starting in 2005, aiming for one order higher luminosity • Hadron beams CSR and RIBF projects are going on at Lanzhou and RIKEN to open the door to presently unreachable regions on the nuclear chart. J-PARC will look into hadron physics which cannot be explored without a high intensity beam, such as (K-,K+) physics, meson decays into di-leptons in nuclear matter and so on. Research on exotic hadrons like Q+ will be another thing to be done at J-PARC. Commissioning of the 50 GeV PS is scheduled to take place in 2007. • Photon beams There are several synchrotron radiation facilities or a facility-to-be in Asia, where CBS beams or Bremsstrahlung beams can be used for hadron physics. A 7 GeV quasi mono-energetic LEPS beam is under consideration.

  34. Plan view of LNS beam lines

  35. h photoproduction S11(1535) H, C, Cu Hyper nuclear physics

  36. New spectrometer at LNS, Sendai

  37. Multiple g-ray Detecting System

  38. J-PARC at Tokai • J-PARC is a joint project between KEK and • JAERI (Japan Atomic Energy Research Institute). Tokai Tsukuba

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