TL;DR
This paper reviews how high-precision CPT symmetry tests using antihydrogen can reveal potential violations indicating new physics beyond the Standard Model, and discusses their implications for fundamental symmetries.
Contribution
It provides a comprehensive overview of CPT symmetry tests with antihydrogen and explores their significance in probing physics beyond the Standard Model.
Findings
CPT violations could manifest as measurable shifts in antihydrogen spectra
High-precision spectroscopy of antihydrogen can set stringent limits on CPT violation
CPT breaking is connected to potential Lorentz invariance violations
Abstract
Various approaches to physics beyond the Standard Model can lead to small violations of CPT invariance. Since CPT symmetry can be measured with ultrahigh precision, CPT tests offer an interesting phenomenological avenue to search for underlying physics. We discuss this reasoning in more detail, comment on the connection between CPT and Lorentz invariance, and review how CPT breaking would affect the (anti)hydrogen spectrum.
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