Published December 2009
| Version v1
Journal article
A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS
Creators
- 1. School of Physics and Astronomy, University of Edinburgh, Edinburth (Ukraine)
- 2. Department of Physics, Catholic University of America, Washington (United States)
Description
We present a preliminary analysis of the photon beam asymmetry observable (Σ) from the photoproduction reaction channel γn → pπ- in the invariant mass range 1.6 - 2.3 GeV. The measurement was obtained using the near-4π CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory, USA, employing a linearly polarised photon beam with an energy range 1.1 - 2.3 GeV, incident on a liquid deuterium target. The measurement will provide new data to address the poorly established neutron excitation spectrum and will greatly expand the sparse world data-set both in energy and angle. (authors)
Additional details
Publishing Information
- Journal Title
- Chinese Physics. C, High Energy Physics and Nuclear Physics
- Journal Volume
- 33
- Journal Issue
- 12
- Journal Page Range
- p. 1369-1372
- ISSN
- 1674-1137
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 43075462
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- ASYMMETRY; CEBAF ACCELERATOR; DEUTERIUM TARGET; EXCITATION; GEV RANGE 01-10; LIQUIDS; NEUTRONS; PHOTON BEAMS; PHOTOPRODUCTION; PIONS; POLARIZED BEAMS; SPECTRA; SPECTROMETERS; USA
- Descriptors DEC
- ACCELERATORS; BARYONS; BASIC INTERACTIONS; BEAMS; BOSONS; DEVELOPED COUNTRIES; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; FERMIONS; FLUIDS; GEV RANGE; HADRONS; INTERACTIONS; LINEAR ACCELERATORS; MEASURING INSTRUMENTS; MESONS; NORTH AMERICA; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; TARGETS
Optional Information
- Notes
- 5 figs., 12 refs.