Full metadata
Title
Analysis of the Polarization Observables H & P for gamma p -> pi^+ n
Description
A search is underway to find baryon resonances that have been predicted, but yet remain unobserved. Nucleon resonances, due to their broad energy widths, overlap and must be disentangled in order to be identified. Meson photoproduction observables related to the orientation of the spin of the incoming photon and the spin of the target proton are useful tools to deconvolve the nucleon resonance spectrum. These observables are particularly sensitive to interference between phases of the complex amplitudes. A set of these observables has been measured using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab with linearly-polarized photons having energies from 725 to 1575 MeV with polar angle values of cos(theta) between -0.8 and 0.9 and transversely-polarized protons in the Jefferson Lab FRozen Spin Target (FROST). By fitting neutron yields from gamma p -> pi^+ n over azimuthal scattering angle, the observables \H and P have been extracted. These observables manifest as azimuthal modulations in the yields for the double-polarization experiment. Preliminary results for these observables will be presented and compared with predictions provided by the SAID Partial-Wave Analysis Facility.
Date Created
2018-05
Contributors
- Lee, Robert John (Author)
- Dugger, Michael (Thesis director)
- Ritchie, Barry (Committee member)
- Department of Physics (Contributor)
- Barrett, The Honors College (Contributor)
Topical Subject
Resource Type
Extent
20 pages
Language
eng
Copyright Statement
In Copyright
Primary Member of
Series
Academic Year 2017-2018
Handle
https://hdl.handle.net/2286/R.I.48209
Level of coding
minimal
Cataloging Standards
System Created
- 2018-04-21 12:23:40
System Modified
- 2021-08-11 04:09:57
- 3 years 3 months ago
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