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München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 13: Fundamental Symmetries I

HK 13.3: Group Report

Monday, March 18, 2019, 17:30–18:00, HS 16

The P2 experiment: A high precision measurement of the weak mixing angleSebastian Baunack1, Dominik Becker1, Frank Maas1,2,3, David Rodriguez Pineiro2, and •Malte Wilfert1 for the P2 collaboration — 1Institut für Kernphysik, Johannes Gutenberg-Universität Mainz — 2Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz — 3PRISMA Cluster of Excellence, Johannes Gutenberg-Universität Mainz

The weak mixing angle sin2θw can be measured in parity violating elastic electron-proton scattering. The aim of the P2 experiment is a very precise measurement of the weak mixing angle with a precision of 0.15% at a low four-momentum transfer of Q2 = 4.5· 10−3 GeV2. This precision is comparable to existing measurements at the Z pole. The experiment will be built at the future MESA accelerator in Mainz.

In this talk, the motivation for the measurement and the theoretical and experimental challenges will be discussed.

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