Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 30: Top Physics II (Properties)

T 30.6: Talk

Tuesday, April 1, 2025, 17:30–17:45, VG 1.103

Searching for CPT violation with top quarks — •Nathaniel Sherrill — Leibniz University Hannover

We present the first model-independent sensitivity to CPT violation in the top sector of the Standard Model. ATLAS and CMS measurements of the top-antitop kinematical mass difference constrain the temporal component of a CPT-violating background field to the interval [-0.13, 0.29] GeV at 95% confidence level.

Keywords: CPT violation; top, antitop; fundamental symmetries; ATLAS, CMS