March 3, 2026Open Access

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

Puntos clave

Di-tau production is measured through differential fiducial cross-sections in heavy-ion collisions.
Measurements show a flux of quasi-real photons leading to tau-lepton pair production.
Analysis utilizes LHC Run 2 dataset of 1.93 nb−1 at a center-of-mass energy of 5.02 TeV.
This work provides insight into photon-induced interactions and their implications in particle physics.

Resumen

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 -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 nb^-1 recorded at s₍₍ = 5. 02 TeV by the ATLAS detector.

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