Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at s√=8 TeV

Allison, Lee and Barton, Adam and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Eva and Chilingarov, Alexandre and Dearnaley, William and Fox, Harald and Grimm, Kathryn and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Smizanska, Maria and Walder, James (2015) Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at s√=8 TeV. Journal of High Energy Physics, 2015 (1). ISSN 1029-8479

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Abstract

Searches for heavy long-lived charged particles are performed using a data sample of 19.1 fb−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.

Item Type: Journal Article
Journal or Publication Title: Journal of High Energy Physics
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/JHEP01(2015)068
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 73997
Deposited By: ep_importer_pure
Deposited On: 18 Jun 2015 05:58
Refereed?: Yes
Published?: Published
Last Modified: 23 Feb 2020 02:44
URI: https://eprints.lancs.ac.uk/id/eprint/73997

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