Contributions From yZ Box Diagrams to Parity Violating Elastic e-p Scattering

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Parity-violating (PV) elastic electron-proton scattering measures Q-weak for the proton, Q{sub W}{sup p}. To extract Q{sub W}{sup p} from data, all radiative corrections must be well-known. Recently, disagreement on the {gamma}Z box contribution to Q{sub W}{sup p} has prompted the need for further analysis of this term. Here, we support one choice of a debated factor, go beyond the previously assumed equality of electromagnetic and {gamma}Z structure functions, and find an analytic result for one of the {gamma}Z box integrals. Our numerical evaluation of the {gamma}Z box is in agreement within errors with previous reports, albeit somewhat larger in central ... continued below

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113007

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Benjamin Rislow, Carl Carlson June 1, 2011.

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Parity-violating (PV) elastic electron-proton scattering measures Q-weak for the proton, Q{sub W}{sup p}. To extract Q{sub W}{sup p} from data, all radiative corrections must be well-known. Recently, disagreement on the {gamma}Z box contribution to Q{sub W}{sup p} has prompted the need for further analysis of this term. Here, we support one choice of a debated factor, go beyond the previously assumed equality of electromagnetic and {gamma}Z structure functions, and find an analytic result for one of the {gamma}Z box integrals. Our numerical evaluation of the {gamma}Z box is in agreement within errors with previous reports, albeit somewhat larger in central value, and is within the uncertainty requirements of current experiments.

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113007

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  • Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology; Journal Volume: 83; Journal Issue: 11

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  • Report No.: JLAB-THY-11-1471
  • Report No.: DOE/OR/23177-2082
  • Report No.: arXiv:1011.2397
  • Grant Number: AC05-06OR23177
  • DOI: 10.1103/PhysRevD.83.113007 | External Link
  • Office of Scientific & Technical Information Report Number: 1039297
  • Archival Resource Key: ark:/67531/metadc830946

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 6:21 p.m.

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Benjamin Rislow, Carl Carlson. Contributions From yZ Box Diagrams to Parity Violating Elastic e-p Scattering, article, June 1, 2011; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc830946/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.