Parity violating asymmetries in the Gº experiment: Pion photoproduction on the Δ resonance
MSpace at the University of Manitoba
View Archive Info| Field | Value | |
| Contributor |
Page, Shelley (Physics and Astronomy) Martin, Jeffrey (Physics and Astronomy) Gwinner, Gerald (Physics and Astronomy) Birchall, James (Physics and Astronomy) Schreckenbach, Georg (Chemistry) Hornidge, David (Mount Allison University) |
|
| Creator |
Coppens, Alexandre Francois Constant
|
|
| Date |
2010-09-13T14:43:35Z
2010-09-13T14:43:35Z 2010-09-13T14:43:35Z |
|
| Identifier |
http://hdl.handle.net/1993/4182
|
|
| Description |
Symmetry tests and more precisely parity violation experiments using the properties of the weak interaction give us unique insight into the internal hadronic structure of matter. The Gº experiment at Jefferson Laboratory used parity violating electron scattering to probe the strange quark contribution to the electromagnetic nucleon form factors, (GMs and GEs) as well as the axial contribution, (GAe). The data taken during the experiment provide further information on the axial transition form factor of the N - $\Delta$ transition, (GANΔ), as well as the scale of the low energy constant (dΔ) characterizing the parity violating γNΔ coupling. The analysis of backward angle Gº data taken with a liquid deuterium target to deduce the parity violating asymmetry for pion photoproduction on the Δ resonance, and the first experimental constraint on the value of dΔ, are reported in this thesis. The results showed that dΔ = (8.3 ± 25.3) gπ where the uncertainty is dominated by statistics, and that 75 percent of the theory range would be excluded by this measurement at 1 sigma.
October 2010 |
|
| Format |
3099927 bytes
application/pdf |
|
| Language |
en_US
|
|
| Subject |
Delta resonance
Parity Violation G0 experiment low energy constant pion photoproduction nucleon structure |
|
| Title |
Parity violating asymmetries in the Gº experiment: Pion photoproduction on the Δ resonance
|
|
| ##plugins.schemas.dc.fields.degree.name## |
Physics and Astronomy
Doctor of Philosophy (Ph.D.) |
|