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Standalone vertex finding in the ATLAS muon spectrometer

Aad, G. ; Abajyan, T. ; Abbott, B. ; Abdallah, J. ; Khalek, S. Abdel ; Abdinov, O. ; Aben, R. ; Abi, B. ; Abolins, M. and AbouZeid, O. S. , et al. (2014) In Journal of Instrumentation 9.
Abstract
A dedicated reconstruction algorithm to find decay vertices in the ATLAS muon spectrometer is presented. The algorithm searches the region just upstream of or inside the muon spectrometer volume for multi-particle vertices that originate from the decay of particles with long decay paths. The performance of the algorithm is evaluated using both a sample of simulated Higgs boson events, in which the Higgs boson decays to long-lived neutral particles that in turn decay to b (b) over bar final states, and pp collision data at root s = 7 TeV collected with the ATLAS detector at the LHC during 2011.
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