The asymmetry in the angular distribution of hadronic events produced in the reaction $e\sp+e\sp- \to Z\sp\circ\to$ hadrons at center of mass energies near the mass of the $Z\sp\circ$ is studied. The data used in the analysis were taken at the European Center for Nuclear Research (CERN) from September 1989-August 1990. / The detector was a large multicomponent system consisting of a central Time Projection Chamber, full electromagnetic and hadronic calorimetry, additional tracking near the interaction region, and luminosity monitors. It provided good charged track reconstruction and momentum resolution. / The charge asymmetry is measured through the mean charge flow, $Q\sb{FB}$ averaged over all events, where $Q\sb{FB}$ = $Q\sb{F}$ $-$ $Q\sb{B}$ is the difference between the momentum weighted charges in the forward and backward hemispheres. / A fit to the value of $\langle Q\sb{FB}\rangle$ yields a measurement of $\rm sin\sp2 \theta\sb{W}(M\sbsp{Z}{2})$ = 0.2300 $\pm$ 0.0036(stat.) $\pm$ 0.0015(exp.sys.) $\pm$ 0.0021(theor.sys.), which compares well with values obtained by other methods. Using quark coupling measurements from previous experiments, a value for the electron left-right asymmetry of ${\cal A}\sb{\rm e}$ = 0.122$\sbsp{-0.026}{+0.046}$ is obtained. This result can also be expressed as a measurement of the ratio of the electron vector and axial couplings, / Source: Dissertation Abstracts International, Volume: 52-06, Section: B, page: 3120. / Major Professor: David Levinthal. / Thesis (Ph.D.)--The Florida State University, 1991.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76442 |
| Contributors | Sawyer, H. Lee, Jr., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 142 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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