Published June 10, 2013 | Version v1
Journal article Metadata-only

First measurement of the helicity dependence of 3He photoreactions in the Δ(1232) resonance region

Creators

  • 1. Institut für Kernphysik, University of Mainz, D-55128 Mainz (Germany)
  • 2. INFN, Sezione di Pavia, I-27100 Pavia (Italy)
  • 3. SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom)
  • 4. Helmholtz-Institut für Strahlen und Kernphysik, University of Bonn, D-53115 Bonn (Germany)
  • 5. Petersburg Nuclear Physics Institute, RU-188300 Gatchina (Russian Federation)
  • 6. II Physikalisches Institut, University of Giessen, D-35392 Giessen (Germany)
  • 7. The George Washington University, Washington, DC 20052-0001 (United States)
  • 8. Lebedev Physical Institute, RU-119991 Moscow (Russian Federation)
  • 9. Tomsk Polytechnic University, Tomsk (Russian Federation)
  • 10. INFN, Sezione di Catania, I-95123 Catania (Italy)
  • 11. Dipartimento di Fisica e Scienze della Terra, Università di Messina, I-98166 Messina (Italy)
  • 12. SUPA School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ (United Kingdom)

Description

The first measurement of the helicity dependence of the total inclusive 3He photo-absorption cross section and of the partial cross sections for several reaction channels was carried out at MAMI (Mainz) in the photon energy range between 150 and 500 MeV. The experiment used the large acceptance Crystal Ball spectrometer, complemented by charged particle and vertex detectors, a circularly polarised tagged photon beam and a longitudinally polarised high-pressure 3He gas target. The results obtained give information on the GDH integral on 3He and on the neutron and allow an investigation of the modifications of nucleon properties inside 3He

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physletb.2013.04.057

Additional details

Identifiers

DOI
10.1016/j.physletb.2013.04.057;
PII
S0370-2693(13)00346-8;

Publishing Information

Journal Title
Physics Letters. Section B
Journal Volume
723
Journal Issue
1-3
Journal Page Range
p. 71-77
ISSN
0370-2693
CODEN
PYLBAJ

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45060278
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CHARGED PARTICLES; CROSS SECTIONS; HELICITY; HELIUM 3 REACTIONS; MEV RANGE; NEUTRONS; PHOTON BEAMS; PHOTONS; SPECTROMETERS; SPIN
Descriptors DEC
ANGULAR MOMENTUM; BARYONS; BEAMS; BOSONS; CHARGED-PARTICLE REACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; NUCLEAR REACTIONS; NUCLEONS; PARTICLE PROPERTIES

Optional Information

Copyright
Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.