Measurement of parity violation in the elastic scattering of polarized electrons from C12

P. A. Souder, R. Holmes, D. H. Kim, K. S. Kumar, M. E. Schulze, K. Isakovich, G. W. Dodson, K. W. Dow, M. Farkhondeh, S. Kowalski, M. S. Lubell, J. Bellanca, M. Goodman, S. Patch, Richard Wilson, G. D. Cates, S. Dhawan, T. J. Gay, V. W. Hughes, A. MagnonR. Michaels, H. R. Schaefer

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105 Scopus citations

Abstract

We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from C12 nuclei. Our result is Aexpt=0.60±0.14±0.02 ppm, where the first error is statistical and the second is systematic. With a beam polarization of 0.37, we compute the isoscalar vector hadronic coupling constant I to be 0.136±0.032±0. 009. The standard model predicts I=0.155 at the tree level, in agreement with our data.

Original languageEnglish (US)
Pages (from-to)694-697
Number of pages4
JournalPhysical Review Letters
Volume65
Issue number6
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Souder, P. A., Holmes, R., Kim, D. H., Kumar, K. S., Schulze, M. E., Isakovich, K., Dodson, G. W., Dow, K. W., Farkhondeh, M., Kowalski, S., Lubell, M. S., Bellanca, J., Goodman, M., Patch, S., Wilson, R., Cates, G. D., Dhawan, S., Gay, T. J., Hughes, V. W., ... Schaefer, H. R. (1990). Measurement of parity violation in the elastic scattering of polarized electrons from C12. Physical Review Letters, 65(6), 694-697. https://doi.org/10.1103/PhysRevLett.65.694