Probing CPT invariance with top quarks at the LHC
A. Belyaev, L. Cerrito, E. Lunghi, S. Moretti, N. Sherrill
TL;DR
This paper presents the first model-independent constraints on CPT violation in the top-quark sector using LHC data, focusing on the mass difference between top and antitop quarks.
Contribution
It provides the first experimental bounds on CPT violation in top quarks derived from ATLAS and CMS measurements, independent of specific models.
Findings
CPT-violating background field component constrained to [-0.13, 0.29] GeV at 95% CL.
First model-independent limits on CPT violation in top-quark interactions.
Utilizes top and antitop mass difference measurements from LHC experiments.
Abstract
The first model-independent sensitivity to CPT violation in the top-quark sector is extracted from ATLAS and CMS measurements of the top and antitop kinematical mass difference. We find that the temporal component of a CPT-violating background field interacting with the top-quark vector current is restricted within the interval GeV at 95% confidence level.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research