Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 TeV
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Aad-2015-Searches for heavy l.pdf
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Author(s)
Taylor, Frank E.
Date Issued
January 2015
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Searches for Heavy Long-Lived Charged Particles with the ATLAS Detector in Proton-Proton Collisions at √s = 8 TeV.” J. High Energ. Phys. 2015, no. 1 (January 2015). © 2015 CERN, for the benefit of the ATLAS Collaboration
Version
Final published version
Abstract
Searches for heavy long-lived charged particles are performed using a data sample of 19.1 fb[superscript −1] from proton-proton collisions at a centre-of-mass energy of √s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. No excess is observed above the estimated background and limits are placed on the mass of long-lived particles in various supersymmetric models. Long-lived tau sleptons in models with gauge-mediated symmetry breaking are excluded up to masses between 440 and 385 GeV for tan β between 10 and 50, with a 290 GeV limit in the case where only direct tau slepton production is considered. In the context of simplified LeptoSUSY models, where sleptons are stable and have a mass of 300 GeV, squark and gluino masses are excluded up to a mass of 1500 and 1360 GeV, respectively. Directly produced charginos, in simplified models where they are nearly degenerate to the lightest neutralino, are excluded up to a mass of 620 GeV. R-hadrons, composites containing a gluino, bottom squark or top squark, are excluded up to a mass of 1270, 845 and 900 GeV, respectively, using the full detector; and up to a mass of 1260, 835 and 870 GeV using an approach disregarding information from the muon spectrometer.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/jhep01(2015)068
