Status of the P2 Experiment: A Measurement of the Weak Mixing Angle at Low Energy
2019 August 19
2019 August 23
The P2 experiment at the upcoming MESA accelerator in Mainz aims for a high precision measurement of the Weak Mixing Angle at low momentum transfer. Access is given by measuring the parity violating asymmetry in the elastic scattering of polarized electrons off unpolarized protons. Deviations in the observed value from the Standard Model expectation give hints to new physics beyond the Standard Model. We present the planned setup and studies on the achievable precision. Further options by using nuclear targets are also discussed.