PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T05: Heavy Ion Physics
Limits for anomalous magnetic and electric dipole moments of tau leptons from heavy-ion UPCs
M. Kłusek-Gawenda*, A. Szczurek, M. Dyndal and M. Schott
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Pre-published on: February 24, 2022
Published on: May 12, 2022
We discuss sensitivity of the $\gamma\gamma \to \tau^+\tau^-$ process in ultraperipheral Pb+Pb collisions at LHC energies on the anomalous magnetic moment of $\tau$ lepton ($a_\tau$). We derive the corresponding cross sections considering semileptonic decays of both leptons in the fiducial volume of ATLAS and CMS detectors. The expected limits on $a_\tau$ with the existing Pb+Pb dataset are found to be better by a factor of two comparing to current best experimental limits and can be further improved by another factor of two at High Luminosity LHC. In addition, our results for $\tau$ lepton electric dipole moment, $d_\tau$, can be competitive with the current best limits obtained by the Belle experiment.
DOI: https://doi.org/10.22323/1.398.0275
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