PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Posters: Heavy Ions
Can we constrain anomalous magnetic and/or electric dipole moments of $tau$ lepton from $Pb Pb \to Pb Pb \tau^+ \tau^-$ reaction at the LHC ?
A. Szczurek, M. Klusek-Gawenda*
*corresponding author
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Pre-published on: January 29, 2021
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We discuss a possibility of extracting anomalous electromagnetic couplings of the tau lepton in ultraperipheral ultrarelativistic heavy ion collisions. Nuclear cross section for exclusive $\tau^+ \tau^-$ production shows sizeable dependence on anomalous magnetic moment. We also investigated the expected sensitivity on $a_\tau$ and $d_\tau$, assuming standard LHC detectors using the currently available as well as future datasets. The expected limits on $a_{\tau}$ with existing Pb+Pb dataset are found to be better by a factor of two comparing to the current best experimental limits and can be further improved by another factor of two at High Luminosity LHC.
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