Hughes, E. W. (2005) Low Energy Tests of the Standard Model. In: SPIN 2004: 16th International Spin Physics Symposium. World Scientific , Hackensack, NJ, pp. 126-133. ISBN 978-981-256-315-6 http://resolver.caltech.edu/CaltechAUTHORS:20110812-075937814
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Low-energy precision measurement of fundamental parameters in the electroweak theory provide information on new physics at high mass scales, beyond the reach of present-day colliders. Historically, low energy tests of the electroweak theory were critical in establishing the validity of the Standard Model; however, today the motivation for performing precision low-energy measurements is to search for beyond Standard Model physics. We review briefly the study of low energy measurements of the electroweak mixing angle, with a focus on a new measurement coming from the observation of a parity-violating asymmetry in the scattering of high energy polarized electrons by unpolarized electrons in a liquid hydrogen target. The experiment was performed at the Stanford Linear Accelerator Center. The present experiment is sensitive to new physics at the TeV energy scale. We also compare the results to other low-energy tests of the electroweak theory, and briefly discuss future planned low-energy measurements.
|Item Type:||Book Section|
|Additional Information:||© 2005 World Scientific Publishing. I would like to thank the organizers of SPIN 2004 for the invitation to give a review talk in beautiful Trieste, and I would like to thank especially Alan Krisch, Gerry Bunce and Franco Bradamante for the session honouring the memory of my father, Vernon Hughes. This work was supported in part by the U.S. National Science Foundation Grant No. PHY-0244245|
|Official Citation:||LOW ENERGY TESTS OF THE STANDARD MODEL E. W. HUGHES 126|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||12 Aug 2011 16:35|
|Last Modified:||12 Aug 2011 16:35|
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