SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 56: Searches EW I

T 56.6: Vortrag

Mittwoch, 22. März 2023, 17:05–17:20, HSZ/0403

Probing the use of advanced observables for measuring the electromagnetic dipole moments of the tau lepton — •Kartik Bhide, Valerie Lang, and Markus Schumacher — Albert-Ludwigs-Universität Freiburg

Precise measurements of the anomalous magnetic moments (a_ℓ) and the electric dipole moments (d_ℓ) of leptons are strong tests of the predictions of the Standard Model (SM), and can be used to constrain theories beyond the SM. Recent measurements of a_τ by the ATLAS and CMS Collaborations demonstrate the ability to perform such measurements in ultra-peripheral lead-lead collisions, via the γγ→ττ process. Improving future measurements of a_τ and d_τ can be done by exploiting advanced observables instead of simple kinematic distributions. In this work, the use of observables inspired by matrix element methods is explored for measuring the electromagnetic moments of the tau lepton, in Monte Carlo events produced by the gamma-UPC event generator integrated with MadGraph5. Studies of the performance of these advanced observables at particle level, in particular regarding the extraction of a_τ will be presented.