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Type: Conference paper
Title: Strange vector form factors from parity-violating electron scattering
Author: Paschke, K.
Thomas, A.
Michaels, R.
Armstrong, D.
Citation: Journal of Physics: Conference Series, 2011; 299: 1-22
Publisher: IOP Publishing
Issue Date: 2011
ISSN: 1742-6596
Conference Name: New Insights into the Structure of Matter: the First Decade of Science at Jefferson Lab (2011 : Newport News, VA, USA)
Statement of
Kent Paschke, Anthony Thomas, Robert Michaels and David Armstrong
Abstract: The simplest models might describe the nucleon as 3 light quarks, but this description would be incomplete without inclusion of the sea of glue and qq pairs which binds it. Early indications of a particularly large contribution from strange quarks in this sea to the spin and mass of the nucleon motivated an experimental program examining the role of these strange quarks in the nucleon vector form factors. The strangeness form factors can be extracted from the well-studied electromagnetic structure of the nucleon using parity-violation in electron-nuclear scattering to isolate the effect of the weak interaction. With high luminosity and polarization, and a very stable beam due to its superconducting RF cavities, CEBAF at Jefferson Lab is a precision instrument uniquely well suited to the challenge of measurements of the small parity-violating asymmetries. The techniques and results of the two major Jefferson Lab experimental efforts in parity-violation studies, HAPPEX and G0, as well as efforts to describe the strange form factors in QCD, will be reviewed.
Rights: Copyright status unknown
RMID: 0020115477
DOI: 10.1088/1742-6596/299/1/012003
Appears in Collections:Chemistry and Physics publications
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