Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at √s = 7 TeV
Name
Aad-2013-Searches for heavy l.pdf
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3.14 MB
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898ed75c21d49ca0753b0035fc78e1e8
Author(s)
Taylor, Frank E.
ATLAS Collaboration
Date Issued
March 2013
Journal
Physics Letters B
Publisher
Elsevier B.V.
Citation
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A.A. Abdelalim, O. Abdinov, et al. “Searches for Heavy Long-Lived Sleptons and R-Hadrons with the ATLAS Detector in Pp Collisions at √s = 7 TeV.” Physics Letters B 720, no. 4–5 (March 2013): 277–308.
Version
Final published version
Abstract
A search for long-lived particles is performed using a data sample of 4.7 fb[superscript −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 tan [beta] = 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2013.02.015
