Improved luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC


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Aad G., Abajyan T., Abbott B., Abdallah J., Khalek S. A. , Abdelalim A. A. , ...More

EUROPEAN PHYSICAL JOURNAL C, vol.73, no.8, 2013 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 8
  • Publication Date: 2013
  • Doi Number: 10.1140/epjc/s10052-013-2518-3
  • Title of Journal : EUROPEAN PHYSICAL JOURNAL C

Abstract

The luminosity calibration for the ATLAS detector at the LHC during pp collisions at root s = 7 TeV in 2010 and 2011 is presented. Evaluation of the luminosity scale is performed using several luminosity-sensitive detectors, and comparisons are made of the long-term stability and accuracy of this calibration applied to the pp collisions at root s = 7 TeV. A luminosity uncertainty of delta L/L = +/- 3.5 % is obtained for the 47 pb(-1) of data delivered to ATLAS in 2010, and an uncertainty of delta L/L = +/- 1.8 % is obtained for the 5.5 fb(-1) delivered in 2011.