SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 133: Top, EW II
T 133.3: Vortrag
Donnerstag, 23. März 2023, 18:00–18:15, HSZ/0103
Measuring the Weinberg Angle at the Belle II Experiment * — •Lukas Grussbach, Daniel Greenwald, and Stephan Paul for the Belle II collaboration — Technical University Munich
The Weinberg angle is known precisely only at high energies around the Z0 mass. At Belle II, we have the opportunity to measure it at a lower energy via e+e− → µ+ µ−, near to the energy where the NuTeV experiment has measured a discrepant value. We present preliminary studies of event selection criteria, muon identification performance and potential precision of such a measurement at Belle II.
*Funded by the DFG under Germany’s Excellence Strategy - EXC2094 - 390783311 and BMBF Verbundforschung (05H21WOKBA BELLE2).