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Publication Information
Title FIRST OBSERVATION OF THE PARITY VIOLATING ASYMMETRY IN MOLLER SCATTERING
Abstract This thesis reports on the E158 experiment at Stanford Linear Accelerator Center (SLAC), which has made the first observation of the parity non-conserving asymmetry in Moller scattering. Longitudinally polarized 48 GeV electrons are scattered off unpolarized (atomic) electrons in a liquid hydrogen target with an average Q2 of 0.027 GeV2. The asymmetry in this process is proportional to ( 1 4 ? sin2 W), where sin2 W gives the weak mixing angle. The thesis describes the experiment in detail, with a particular focus on the design and construction of the electromagnetic calorimeter. This calorimeter was the primary detector in the experiment used to measure the flux of the scattered Moller electrons and eP electrons. It employed the quartz fiber calorimetry technique, and was built at Syracuse University. The preliminary results from the first experimental data taken in spring 2002 give APV = ?151.9±29.0(stat)±32.5(syst) parts per billion. This in turn gives sin2 W = 0.2371 ± 0.002
Author(s) Imran Younus
Publication Date November 2003
Document Type Thesis
Primary Institution Syracuse University, Syracuse, NY
Affiliation Exp Nuclear Physics / Experimental Halls / Hall A
Funding Source
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-PHY-03-239 OSTI Number: 915445
LANL Number: Other Number: DOE/ER/40150-4350
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Thesis
Thesis Type PhD
Advisor Institution
1. Paul Souder Syracuse University
Attachments/Datasets/DOI Link
Document(s)
JLAB-PHY-03-239.pdf (STI Document)
Dataset(s) (none)
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