j-parc一般化ー分布探究(可能性)....ppt

Nov. 12, 2007 Shinya Sawada @ RCNP High Momentum Beamline at J-PARC Shin’ya Sawada KEK (High Energy Accelerator Research Organization, Japan) Slow Extraction Beamline (Phase 1) Beamlines at the Hadron Hall What is the High Momentum Beamline? Primary beams: proton (Phase 1), polarized proton and heavy ions (future) up to 51 GeV/c. Secondary beams: proton, pion, kaon, etc. Hadron Physics Physics Possibilities of the High Momentum Beamline Hadron Physics ~ Physics of QCD Two Major Quests of QCD quark confinement and chiral symmetry breaking Subjects of Hadron Physics: attacking these quests from various aspects of view, at J-PARC. Hadron spectroscopy: spectroscopy with pi/K Meson-baryon dynamics: chiral perturbation via K decays,… Quark nuclear matter Nuclear force: pi/K scattering, hypernuclear formation via pi/K Nucleon structure Experiments to explore major hadron physics quests are possible at the high momentum beamline! vector meson modification in matter ? chiral symmetry restoration Drell-Yan and J/Psi production ? nucleon structure at large x Examples of Experiments High Mass Dimuon Measurement ~1012/s protons talk by Goto-san for the pol. part Vector Meson Modification in Nuclei ~109-1010/s protons talk by Yokkaichi-san Other Possibilities GPD with pp ? p pi Delta ? talk by Sudoh-san at the Autumn JPS meeting “J-PARCにおける一般化パートン分布研究（の可能性）とクォーク軌道角運動量” Vector meson inside nucleus talk by Ozawa-san High momentum kaon/pion?? P04: Measurement of High-Mass Dimuon Production at the 50-GeV Proton Synchrotron needs 30 and 50 GeV, 1012 protons per sec. Physics with High-Mass Dimuons at J-PARC Issues raised by PAC Relation with Fermilab E906? 50GeV proton beam is not available. Shoji Nagamiya says that a 50-GeV proton may be available with slow ramping even without a flying-wheel generator, according to Prof. Yamazaki, the leader of the J-PARC accelerator group. What is a stage-1 approval? Status of Fermilab E906 Approved by Fermilab PAC in 2001 Reviewed by Fermilab PA