Abstract
We have measured the parity-violating electroweak asymmetry in the elastic scattering of longitudinally polarized electrons from 12C nuclei. Our result for the experimental asymmetry is Aexp = 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 ± 0.02, we deduce a value for the isoscalar vector hadronic coupling constant \(\widetilde{\gamma }\) of 0.136 ± 0.032 ± 0.009, which is in agreement with the standard model prediction of \(\widetilde{\gamma }\) = 0.155.
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Bellanca, J. et al. (1991). Bates Parity Experiment on Elastic Electron Carbon Scattering. In: Althoff, KH., Meyer, W. (eds) High Energy Spin Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-86995-2_74
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DOI: https://doi.org/10.1007/978-3-642-86995-2_74
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