Difference between revisions of "TF 01092012 Colloq"
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| − | ISU's intermediate energy nuclear physics group is presently involved in several fundamental physics measurements. This talk will describe two | + | ISU's intermediate energy nuclear physics group is presently involved in several fundamental physics measurements. This talk will describe two measurements using inelastic polarized electron scattering. The first measurement investigates the response of the nucleons first excited state, the Delta resonance, to probe a polarized electro-magnetic probes. The excitation of the nucleon to its first excited state is commonly described in terms of a a quark spin flip induced by an electromagnetic probe. Recently however, there has been increasing interest in a second method which uses a different neutral particle called the Z-boson to induce the quark spin flip using the Weak force. A fundamental constant known as d-delta will be measured using this interaction. A second measurement measures quark polarization distributions by looking at the response of a polarized nucleon to a polarized electron. |
Polarized positron production. | Polarized positron production. | ||
| − | Detector development. | + | Detector development. |
| − | |||
| − | |||
=Intro= | =Intro= | ||
Revision as of 00:27, 4 January 2012
Title: Inelastic Physics Asymmetries
Abstract
ISU's intermediate energy nuclear physics group is presently involved in several fundamental physics measurements. This talk will describe two measurements using inelastic polarized electron scattering. The first measurement investigates the response of the nucleons first excited state, the Delta resonance, to probe a polarized electro-magnetic probes. The excitation of the nucleon to its first excited state is commonly described in terms of a a quark spin flip induced by an electromagnetic probe. Recently however, there has been increasing interest in a second method which uses a different neutral particle called the Z-boson to induce the quark spin flip using the Weak force. A fundamental constant known as d-delta will be measured using this interaction. A second measurement measures quark polarization distributions by looking at the response of a polarized nucleon to a polarized electron.
Polarized positron production.
Detector development.