Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Poster

HK 52.6: Poster

Thursday, March 1, 2018, 16:30–18:45, Audimax Foyer

The P2-Experiment - A high precision determination of the proton’s weak charge — •Dominik Becker¹, Kathrin Imai¹, David Rodriguez Pineiro², Sebastian Baunack¹, Krishna S. Kumar⁴, and Frank E. Maas^{1, 2, 3} — ¹Institut für Kernphysik, Mainz, Ger — ²Helmholtz-Institut, Mainz, Ger — ³GSI, Darmstadt, Ger — ⁴Stony Brook, NY, USA

The goal of the P2 collaboration is to perform a high precision determination of the electroweak mixing angle ŝ_Z² at low momentum transfer to a relative precision of 0,15  %. This can be achieved by measuring the proton’s weak charge to a relative precision of 1,9  %. The parity violating asymmetry in elastic electron-proton-scattering grands experimental access to the weak charge of the proton.

The P2-Experiment will be carried out at the new electron accelerator facility MESA to be constructed in Mainz. The poster we present features the experimental concept, calculations regarding the achievable precision in the determination of the proton weak charge as well as results of Geant4-simulations carried out to validate the experimental setup.