A study of the material in the ATLAS inner detector using secondary hadronic interactions

The ATLAS collaboration
2012 Journal of Instrumentation  
The ATLAS inner detector is used to reconstruct secondary vertices due to hadronic interactions of primary collision products, so probing the location and amount of material in the inner region of ATLAS. Data collected in 7 TeV pp collisions at the LHC, with a minimum bias trigger, are used for comparisons with simulated events. The reconstructed secondary vertices have spatial resolutions ranging from ~200 microns to 1 mm. The overall material description in the simulation is validated to
more » ... s validated to within an experimental uncertainty of about 7%. This will lead to a better understanding of the reconstruction of various objects such as tracks, leptons, jets, and missing transverse momentum.
doi:10.1088/1748-0221/7/01/p01013 fatcat:etl3og5qybcmhatppmxtwps6we