Measurements of the Polarization Observables I{sup s} and I{sup c} for {gamma}{sup {yields}p{yields}}p{pi}{sup +{pi}-} using the CLAS Spectrometer
- Department of Physics, Florida State University, Tallahassee, FL 32306 (United States)
Model predictions regarding the excited baryon spectrum provided by Constituent Quark Models show good agreement with experimental measurements in the low-energy region less than {approx_equal}1.8 GeV. The mass region above {approx_equal}1.8 GeV, however, contains many resonances which are predicted to exist by these models but have not been experimentally verified. The analysis of a double meson final state using linearly polarized photoproduction data allows access to two polarization observables, I{sup s} and I{sup c}(also known as the beam asymmetry {Sigma} for a single meson final state). It has been shown that measurements of these polarizaton observables can provide insight into this missing resonance problem. This analysis was carried out on data taken from the CLAS-g8b data run period conducted at Jefferson Lab in Newport News, Virginia. The analysis of this data and preliminary measurements of these obsevables will be dicussed.
- OSTI ID:
- 21426462
- Journal Information:
- AIP Conference Proceedings, Vol. 1257, Issue 1; Conference: HADRON 2009: 13. international conference on hadron spectroscopy, Tallahassee, FL (United States), 29 Nov - 4 Dec 2009; Other Information: DOI: 10.1063/1.3483399; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CEBAF ACCELERATOR
GEV RANGE
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PHOTON-PROTON INTERACTIONS
PHOTOPRODUCTION
PIONS MINUS
PIONS PLUS
POLARIZATION
PROTONS
QUARK MODEL
REST MASS
ACCELERATORS
BARYONS
BASIC INTERACTIONS
BOSONS
COMPOSITE MODELS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
INTERACTIONS
LINEAR ACCELERATORS
MASS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MESONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
SPECTROMETERS