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Search for pair production of massive particles decaying into three quarks with the ATLAS detector in √s =7 TeV pp collisions at the LHC

Author(s)
Taylor, Frank E.
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Abstract
A search is conducted for hadronic three-body decays of a new massive coloured particle in s√ = 7 TeV pp collisions at the LHC using an integrated luminosity of 4.6 fb[superscript −1] collected by the ATLAS detector. Supersymmetric gluino pair production in the context of a model with R-parity violation is used as a benchmark scenario. The analysis is divided into two search channels, each optimised separately for their sensitivity to high-mass and low-mass gluino production. The first search channel uses a stringent selection on the transverse momentum of the six leading jets and is performed as a counting experiment. The second search channel focuses on low-mass gluinos produced with a large boost. Large-radius jets are selected and the invariant mass of each of the two leading jets is used as a discriminant between the signal and the background. The results are found to be consistent with Standard Model expectations and limits are set on the allowed gluino mass.
Date issued
2012-12
URI
http://hdl.handle.net/1721.1/84670
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, O. Abdinov, et al. “Search for pair production of massive particles decaying into three quarks with the ATLAS detector in $ \sqrt{s}=7\;\mathrm{TeV} $ pp collisions at the LHC.” Journal of High Energy Physics 2012, no. 12 (December 17, 2012). © CERN, for the benefi t of the ATLAS collaboration
Version: Final published version
ISSN
1029-8479
1126-6708

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