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Title: Recent Results from Experiments at COSY

In hadron physics, experiments using hadronic probes may shed light on open questions on the structure of hadrons, their interactions that are subject to the strong force and on the symmetries of nature. Therefore a major focus of the physics program studied at the COoler SYnchrotron COSY of the Forschungszentrum Juelich is the production of mesons and hyperons in hadron- hadron scattering with the aim to investigate relevant production processes, interactions of the participating particles as well as symmetries and symmetry breaking. The COoler SYnchrotron COSY at Juelich accelerates protons and deuterons with momenta up to 3.7 GeV/c covering hadron physics in the light quark sector. The availability of the beam cooling systems allow precision measurements, using polarized proton and deuteron beams in combination with polarized Hydrogen or Deuterium targets. Due to the excellent experimental conditions at COSY single- and double-polarization measurements can be performed with high reaction rates. With the operation of the recently installed WASA-at-COSY apparatus, high-statistics studies aiming at rare decays of {eta} and {eta}{sup '} are effectively turning COSY into a meson factory. This contribution summarizes the ongoing physics program at the COSY facility, using the detector systems ANKE, WASA and COSY-TOF highlighting a few selectivemore » recent results and outlining future developments. The research at COSY also provides a step towards the realization of FAIR with studies on spin manipulation and polarization build-up of protons in polarized targets.« less
Authors:
 [1]
  1. Institutfuer Kernphysik and Juelich Centre for Hadron Physics, Forschungszentrum Juelich, D-52425 Juelich (Germany)
Publication Date:
OSTI Identifier:
21426382
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1257; Journal Issue: 1; Conference: HADRON 2009: 13. international conference on hadron spectroscopy, Tallahassee, FL (United States), 29 Nov - 4 Dec 2009; Other Information: DOI: 10.1063/1.3483321; (c) 2010 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSY STORAGE RING; D QUARKS; DEUTERIUM TARGET; DEUTERON BEAMS; ETA MESONS; GEV RANGE; MULTIPARTICLE SPECTROMETERS; NUCLEAR REACTION KINETICS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE DECAY; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; POLARIZATION; POLARIZED BEAMS; POLARIZED TARGETS; SPIN; STRONG INTERACTIONS; SYMMETRY BREAKING; U QUARKS ACCELERATORS; ANGULAR MOMENTUM; BARYON-BARYON INTERACTIONS; BASIC INTERACTIONS; BEAMS; BOSONS; CYCLIC ACCELERATORS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; ION BEAMS; KINETICS; MEASURING INSTRUMENTS; MESONS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUARKS; REACTION KINETICS; SPECTROMETERS; STORAGE RINGS; SYNCHROTRONS; TARGETS