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Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor

Spayde, D. T. and Averett, T. and Barkhuff, D. and Beck, D. H. and Beise, E. J. and Benson, C. and Breuer, H. and Carr, R. and Covrig, S. and DelCorso, J. and Dodson, G. and Dow, K. and Eppstein, C. and Farkhondeh, M. and Filippone, B. W. and Frazier, P. and Hasty, R. and Ito, T. M. and Jones, C. E. and Korsch, W. and Kowalski, S. and Lee, P. and Maneva, E. and McCarty, K. and McKeown, R. D. and Mikell, J. and Mueller, B. and Naik, P. and Pitt, M. and Ritter, J. and Savu, V. and Sullivan, M. and Tieulent, R. and Tsentalovich, E. and Wells, S. P. and Yang, B. and Zwart, T. (2000) Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor. Physical Review Letters, 84 (6). pp. 1106-1109. ISSN 0031-9007. https://resolver.caltech.edu/CaltechAUTHORS:SPAprl00

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Abstract

We report a new measurement of the parity-violating asymmetry in elastic electron scattering from the proton at backward scattering angles. This asymmetry is sensitive to the strange magnetic form factor of the proton as well as electroweak axial radiative corrections. The new measurement of A = -4.92±0.61±0.73 ppm provides a significant constraint on these quantities. The implications for the strange magnetic form factor are discussed in the context of theoretical estimates for the axial corrections.


Item Type:Article
ORCID:
AuthorORCID
Ito, T. M.0000-0003-3494-6796
Additional Information:©2000 The American Physical Society Received 15 September 1999 The skillful efforts of the staff of the MIT/Bates facility to provide high quality beam and improve the experiment are gratefully acknowledged. This work was supported by NSF Grants No. PHY-9420470 (Caltech), No. PHY-9420787 (Illinois), No. PHY-9457906/PHY-9971819 (Maryland), No. PHY-9733772 (VPI), and DOE Cooperative Agreement No. DE-FC02-94ER40818 (MITBates) and Contract No. W-31-109-ENG-38 (ANL).
Issue or Number:6
Record Number:CaltechAUTHORS:SPAprl00
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:SPAprl00
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.84.1106
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5727
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 Oct 2006
Last Modified:02 Oct 2019 23:25

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