Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 TeV
- Aix-Marseille Univ. and CNRS/IN2P3, Marseille (France). et al.
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 $$ \sqrt{s}=8 $$ 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.[Figure not available: see fulltext.]
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- ATLAS collaboration; The ATLAS collaboration
- Grant/Contract Number:
- AC02-06CH11357; AC02-05CH11231; SC00112704; AC03-76SF00515
- OSTI ID:
- 1224103
- Alternate ID(s):
- OSTI ID: 1224198; OSTI ID: 1524011
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2015, Issue 1; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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