Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC

TL;DR

This paper details the measurement of luminosity in proton-proton collisions at 8 TeV using the ATLAS detector, achieving a 1.9% uncertainty with multiple luminometers to ensure accuracy and stability.

Contribution

It presents a comprehensive method for luminosity determination at 8 TeV and compares different luminometers to validate the results.

Findings

Luminosity uncertainty of ±1.9% achieved.

Multiple luminometers used for cross-validation.

Stable and consistent luminosity measurements over the data-taking period.

Abstract

The luminosity determination for the ATLAS detector at the LHC during pp collisions at $\sqrt{s}$ = 8 TeV in 2012 is presented. The evaluation of the luminosity scale is performed using several luminometers, and comparisons between these luminosity detectors are made to assess the accuracy, consistency and long-term stability of the results. A luminosity uncertainty of dL/L = +/- 1.9% is obtained for the 22.7 fb$^{-1}$ of pp collision data delivered to ATLAS at $\sqrt{s}$ = 8 TeV in 2012.