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

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  • ATLAS Collaboration
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Article number2518
<mark>Journal publication date</mark>08/2013
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number8
Volume73
Number of pages39
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

The luminosity calibration for the ATLAS detector at the LHC during pp collisions at 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 s√=7 TeV . A luminosity uncertainty of δL/L=±3.5 % is obtained for the 47 pb−1 of data delivered to ATLAS in 2010, and an uncertainty of δL/L=±1.8 % is obtained for the 5.5 fb−1 delivered in 2011.