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

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Article number86
<mark>Journal publication date</mark>12/2012
<mark>Journal</mark>Journal of High Energy Physics
Issue number12
Volume2012
Number of pages42
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A search is conducted for hadronic three-body decays of a new massive coloured particle in s√=7TeV pp collisions at the LHC using an integrated luminosity of 4.6 fb−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.

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This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.