Precision Measurement of sin2(theta_w) at MESA
classification
✦ hep-ph
keywords
experimentmeasurementmesaprecisionaccuracyangleasymmetrychallenges
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A forthcoming experiment of low-energy elastic electron proton scattering at the new MESA facility in Mainz is planned to provide a high-precision measurement of the parity-violating polarisation asymmetry. This experiment is expected to lead to a precision determination of the weak mixing angle, competitive with Z-pole data. We discuss the challenges for theory to derive predictions with the required accuracy.
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