# 2019 Meeting of the Division of Particles & Fields of the American Physical Society

July 29, 2019 to August 2, 2019
Northeastern University
US/Eastern timezone

## ATLAS Run-2 Luminosity Measurements

Jul 29, 2019, 4:18 PM
18m
West Village G 108 (Northeastern University)

### West Village G 108

#### Northeastern University

Oral Presentation Particle Detectors

### Speaker

Rachel Christine Rosten (The Barcelona Institute of Science and Technology (BIST) (ES))

### Description

During the LHC Run-2 operations ATLAS gathered a total of $139~fb^{-1}$ of $pp$ collision data at a center-of-mass energy of $\sqrt{s}=13~$TeV. The uncertainty on the measurement of the total integrated luminosity, $1.7\%$, is the dominant uncertainty for a number of analyses. A precise luminosity measurement is therefore of high importance. In this talk, we provide a description of the methodology of the measurement of the total integrated luminosity and its associated uncertainty. Special attention is given to improvements made compared to Run-1 and an overview of the relevant sub-detectors is provided. The use of Van-der-Meer beam-separation scans in calibrating the luminosity is also detailed.

### Primary author

Rachel Christine Rosten (The Barcelona Institute of Science and Technology (BIST) (ES))