Searches for heavy long-lived sleptons and R-Hadrons with the ATLAS detector in $pp$ collisions at $\sqrt{s}=7$ TeV
(2013) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 720, p. 277 (2013)
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- A search for long-lived particles is performed using a data sample of 4.7 fb −1 from proton–proton collisions at a centre-of-mass energy s=7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background and lower limits, at 95% confidence level, are set on the mass of the long-lived particles in different scenarios, based on their possible interactions in the inner detector, the calorimeters and the muon spectrometer. Long-lived staus in gauge-mediated SUSY-breaking models are excluded up to a mass of 300 GeV for tanβ=5–20 . Directly produced long-lived sleptons are excluded up to a mass of 278 GeV. R -hadrons, composites of gluino (stop, sbottom) and light quarks, are excluded up to a mass of 985 GeV (683 GeV, 612 GeV) when using a generic interaction model. Additionally two sets of limits on R -hadrons are obtained that are less sensitive to the interaction model for R -hadrons. One set of limits is obtained using only the inner detector and calorimeter observables, and a second set of limits is obtained based on the inner detector alone.
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Tanasijczuk, A. J., ATLAS, & et al. (2013). Searches for heavy long-lived sleptons and R-Hadrons with the ATLAS detector in $pp$ collisions at $\sqrt{s}=7$ TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 720, 277. https://doi.org/10.1016/j.physletb.2013.02.015 (Original work published 2013)