# High-precision measurements of the Z-boson transverse momentum and alpha_S with the ATLAS experiment

- Institution: CERN
- Department: LHC Seminar
- Speaker: Stefano Camarda
- Year: 2023
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3002703)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

This seminar presents a precise measurement of the production properties of the Z-boson in the full phase space of the decay leptons, based on 8 TeV pp collision data collected by the ATLAS experiment in 2012. The double-differential cross-section distributions in Z-boson transverse momentum and rapidity are measured in the pole region. In a novel approach, the measured Z transverse momentum is used to determine the strong coupling constant. The analysis uses state-of-the-art predictions at third order accuracy in perturbative QCD, supplemented by resummation of logarithmically-enhanced contributions in the small transverse-momentum region of the lepton pairs. The extracted alphaS(mZ) result is the most precise single measurement to date.

Refreshments will be served at 10:30 .

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## Lectures

1. [High-precision measurements of the Z-boson transverse momentum and alpha_S with the ATLAS experiment](https://invisiblenetwork.ai/learn/cern/3002703/87c69034007a), 1 h 9 min (CERN's player)