Published August 2005 | Version v1
Journal article Metadata-only

Measurement of the asymmetries in 3-vector(He)(vector-e,e'p)d and 3-vector(He)(vector-e,e'p)np

Creators

  • 1. Johannes Gutenberg-Universitaet Mainz, Institut fuer Kernphysik, Mainz (Germany)
  • 2. Universitaet Basel, Departement fuer Physik und Astronomie, Basel (Switzerland)
  • 3. University of Zagreb, Department of Physics, Bijenicka c. 32, P.P. 331, Zagreb (Croatia)
  • 4. Ruhr-Universitaet Bochum, Institut fuer Theoretische Physik II, Bochum (Germany)
  • 5. Jagiellonian University, M. Smoluchowski Institute of Physics, Krakow (Poland)
  • 6. Inst. fuer Physik, Mainz (Germany)
  • 7. Inst. fuer Kernphysik, Mainz Univ. (Germany)
  • 8. Universitaet Tuebingen, Physikalisches Institut, Tuebingen (Germany)
  • 9. Johannes Gutenberg-Universitaet, Institut fuer Physik, Mainz (Germany)
  • 10. Kyushu Institute of Technology, Department of Physics, Faculty of Engineering, Kitakyushu (Japan)
  • 11. Institut fuer Theoretische Kernphysik, Forschungszentrum Juelich, Juelich (Germany)
  • 12. Physikalisches Inst., Tuebingen Univ. (Germany)
  • 13. Dept. of Physics, Basel Univ. (Germany)
  • 14. University of Ljubljana, Institute Jozef Stefan, Ljubljana (Slovenia)
  • 15. Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, MA (United States)

Description

The electron target asymmetries A parallel and A perpendicularto with target spin parallel and perpendicular to the momentum transfer q were measured for both the two- and three-body breakup of 3He in the 3vector(He)(vector-e,e'p)-reaction. Polarized electrons were scattered off polarized 3He in the quasielastic regime in parallel kinematics with the scattered electron and the knocked-out proton detected using the Three-Spectrometer Facility at MAMI. The results are compared to Faddeev calculations which take into account Final-State Interactions as well as Meson Exchange Currents. The experiment confirms the prediction of a large effect of Final-State Interactions in the asymmetry of the three-body breakup and of an almost negligible one for the two-body breakup. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2005-10115-2

Additional details

Identifiers

DOI
10.1140/epja/i2005-10115-2;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
25
Journal Issue
2
Journal Page Range
p. 177-183
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
36098308
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BREAKUP REACTIONS; DEUTERIUM; ELECTRON REACTIONS; ELECTRONS; EXPERIMENTAL DATA; HELIUM 3 TARGET; KNOCK-OUT REACTIONS; MEV RANGE 100-1000; NEUTRONS; POLARIZATION-ASYMMETRY RATIO; POLARIZED BEAMS; POLARIZED TARGETS; PROTONS; QUASI-ELASTIC SCATTERING
Descriptors DEC
BARYONS; BEAMS; CHARGED-PARTICLE REACTIONS; DATA; DIRECT REACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; HYDROGEN ISOTOPES; INFORMATION; ISOTOPES; LEPTON REACTIONS; LEPTONS; LIGHT NUCLEI; MEV RANGE; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUMERICAL DATA; ODD-ODD NUCLEI; QUASI-FREE REACTIONS; SCATTERING; STABLE ISOTOPES; TARGETS

Optional Information

Collaborations
A1 Collaboration