Probing CPT Invariance with Top Quarks at the LHC

A Belyaev; L Cerrito; E Lunghi; S Moretti; N Sherrill

doi:10.1103/PhysRevLett.133.221601

Probing CPT Invariance with Top Quarks at the LHC

Phys Rev Lett. 2024 Nov 29;133(22):221601. doi: 10.1103/PhysRevLett.133.221601.

Authors

A Belyaev^{1

2}, L Cerrito^{3

4}, E Lunghi⁵, S Moretti^{1

2

6}, N Sherrill⁷

Affiliations

¹ School of Physics and Astronomy, <a href="https://ror.org/01ryk1543">University of Southampton</a>, Southampton SO17 1BJ, United Kingdom.
² Particle Physics Department, <a href="https://ror.org/03gq8fr08">Rutherford Appleton Laboratory</a>, Chilton, Didcot, Oxon OX11 0QX, United Kingdom.
³ <a href="https://ror.org/025rrx658">INFN Sezione di Roma Tor Vergata</a>, Rome 00133, Italy.
⁴ Dipartimento di Fisica, <a href="https://ror.org/02p77k626">Universitá di Roma Tor Vergata</a>, Rome 00133, Italy.
⁵ Physics Department, <a href="https://ror.org/01kg8sb98">Indiana University</a>, Bloomington, Indiana 47405, USA.
⁶ Department of Physics and Astronomy, <a href="https://ror.org/048a87296">Uppsala University</a>, Box 516, SE-751 20 Uppsala, Sweden.
⁷ Department of Physics and Astronomy, <a href="https://ror.org/00ayhx656">University of Sussex</a>, Brighton BN1 9QH, United Kingdom.

PMID: 39672114
DOI: 10.1103/PhysRevLett.133.221601

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 [-0.13,0.29] GeV at 95% confidence level.