Jones, G. Mark (2004) A precision measurement of the weak mixing angle in Moller scattering at low Q2. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-05272004-172049
The electroweak theory has been probed to a high level of precision at the mass scale of the Zo through the joint contributions of LEP at CERN and the SLC at SLAC. The E158 experiment at SLAC complements these results by measuring the weak mixing angle at a Q2 of 0.026 (GeV/c)2, far below the weak scale.
The experiment utilizes a 48 GeV longitudinally polarized electron beam on unpolarized atomic electrons in a target of liquid hydrogen to measure the parity-violating asymmetry APV in Moller scattering.
The tree-level prediction for APV is proportional to 1-4sin2θW. Since sin2θW is approximately 0.25, the effect of radiative corrections is enhanced, allowing the E158 experiment to probe for physics effects beyond the Standard Model at the TeV scale.
This work presents the results from the first two physics runs of the experiment, covering data collected in the year 2002. The parity-violating asymmetry APV was measured to be
|Item Type:||Thesis (Dissertation (Ph.D.))|
|Subject Keywords:||electron-electron; GWS; stanford linear accelerator|
|Degree Grantor:||California Institute of Technology|
|Division:||Physics, Mathematics and Astronomy|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||19 May 2004|
|Non-Caltech Author Email:||markj (AT) slac.stanford.edu|
|Default Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Imported from ETD-db|
|Deposited On:||28 May 2004|
|Last Modified:||26 Dec 2012 02:47|
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