Return to search

Helicity Asymmetry E In Eta (547) Meson Photoproduction From The Proton

abstract: The nucleon resonance spectrum consists of many overlapping excitations. Polarization observables are an important tool for understanding and clarifying these spectra. While there is a large data base of differential cross sections for the process, very few data exist for polarization observables. A program of double polarization experiments has been conducted at Jefferson Lab using a tagged polarized photon beam and a frozen spin polarized target (FROST). The results presented here were taken during the first running period of FROST using the CLAS detector at Jefferson Lab with photon energies ranging from 329 MeV to 2.35 GeV. Data are presented for the E polarization observable for eta meson photoproduction on the proton from threshold (W=1500 MeV) to W=1900 MeV. Comparisons to the partial wave analyses of SAID and Bonn-Gatchina along with the isobar analysis of eta-MAID are made. These results will help distinguish between current theoretical predictions and refine future theories. / Dissertation/Thesis / Ph.D. Physics 2011

Identiferoai:union.ndltd.org:asu.edu/item:14339
Date January 2011
ContributorsMorrison, Brian Thomas (Author), Ritchie, Barry (Advisor), Dugger, Michael (Committee member), Shovkovy, Igor (Committee member), Davies, Paul (Committee member), Alarcon, Ricardo (Committee member), Arizona State University (Publisher)
Source SetsArizona State University
LanguageEnglish
Detected LanguageEnglish
TypeDoctoral Dissertation
Format132 pages
Rightshttp://rightsstatements.org/vocab/InC/1.0/, All Rights Reserved

Page generated in 0.0016 seconds