IOP Joint APP and HEPP Annual Conference 2025

Measurement of high-mass di-tau production using √s = 13 TeV proton-proton collision data collected with the ATLAS detector

7 Apr 2025, 16:00

15m

Ray Dolby Auditorium (A1.015-A2.015)

Parallel talk Collider Physics - Electroweak (EW) and Higgs Collider Physics - Electroweak (EW) and Higgs

Speaker

Peng Wang (University College London (GB))

Description

This analysis involves measuring the fiducial differential cross sections of high-mass di-lepton production with two hadronically decaying taus, using the full ATLAS Run-2 data.

One of the main motivations for this analysis is that it provides good sensitivity to a compelling BSM theory (LeptoQuark) that explains the anomalous b-hadron decay fractions observed at both BaBar and LHCb.

In this analysis, the visible di-tau invariant mass distribution is measured and unfolded to the particle level and is compared with the theory predictions from Sherpa 2.2.11 and Powheg Box+Pythia 8. The CONTUR package is used to evaluate the sensitivity of this measurement to the inclusive SMEFT model and other BSM theories.