Measuring photon-induced tau-lepton pair production in ultra-peripheral heavy-ion collisions with ATLAS

Ultraperipheral lead-lead collisions at the LHC provide an intense flux of quasi-real photons. Collisions between these photons can yield the production of pairs of $\tau$-leptons. This proceeding presents the first differential fiducial cross-section measurements of photon-induced di-tau production in lead-lead collisions at the LHC. The presented measurements utilise the full LHC Run 2 lead-lead dataset of 1.93 $\rm{nb}^{-1}$ recorded at $\sqrt{s_{NN}}$ = 5.02 TeV by the ATLAS detector.

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Publication Details

Published
2026-01-26
DOI
https://doi.org/10.22323/1.485.0197
Primary Topic
High-Energy Particle Collisions Research
Type
article
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article

Measuring photon-induced tau-lepton pair production in ultra-peripheral heavy-ion collisions with ATLAS

Lydia Beresford
High-Energy Particle Collisions Research
article

Measuring photon-induced tau-lepton pair production in ultra-peripheral heavy-ion collisions with ATLAS

Lydia Beresford
article en

Abstract

Ultraperipheral lead-lead collisions at the LHC provide an intense flux of quasi-real photons. Collisions between these photons can yield the production of pairs of $\tau$-leptons. This proceeding presents the first differential fiducial cross-section measurements of photon-induced di-tau production in lead-lead collisions at the LHC. The presented measurements utilise the full LHC Run 2 lead-lead dataset of 1.93 $\rm{nb}^{-1}$ recorded at $\sqrt{s_{NN}}$ = 5.02 TeV by the ATLAS detector.

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Measuring photon-induced tau-lepton pair production in ultra-peripheral heavy-ion collisions with ATLAS — Lydia Beresford · (2026) | TGRS Research Map | TGRS