# Quark Matter 2018

May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## Measurement of $Z$ boson production in Pb+Pb and $pp$ collisions by the ATLAS experiment

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Electromagnetic and weak probes

### Speaker

Mirta Dumancic (Weizmann Institute of Science (IL))

### Description

A measurement of $Z$ boson production is performed via leptonic decay channels using data samples from the 2015 LHC run obtained at the center-of-mass energy of $\sqrt{s_{_{\rm{NN}}}} = 5.02$ TeV with a total integrated luminosity of 0.49 nb$^{-1}$ and 25.3 pb$^{-1}$ in Pb+Pb and $pp$, respectively. Integrated and differential cross sections are measured for both electron and muon channels in a fiducial detector acceptance defined by a lepton selection of $p_{\rm{T}}^{\ell}>20$ GeV and $|\eta^{\ell}|<2.47(2.5)$ for electrons (muons) with correction for FSR effects. The combined result for both decay channels is compared to NNLO pQCD predictions with different PDF sets calculated with DYNNLO. The large statistical sample of Pb+Pb collisions also allows a high-precision test of the Glauber model.

Content type Experiment ATLAS Presenter name already specified

### Primary authors

Mirta Dumancic (Weizmann Institute of Science (IL)) Barbara Krystyna Wosiek (Institute of Nuclear Physics Polish Academy of Sciences (PL))