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

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 $$ \sqrt{s}=8 $$ 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.]

Authors:
 [1]
+ Show Author Affiliations
  1. Aix-Marseille Univ. and CNRS/IN2P3, Marseille (France). et al.
Publication Date:
Research Org.:
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 Org.:
USDOE Office of Science (SC)
Contributing Org.:
ATLAS collaboration; The ATLAS collaboration
OSTI Identifier:
1224103
Alternate Identifier(s):
OSTI ID: 1224198; OSTI ID: 1524011
Grant/Contract Number:  
AC02-06CH11357; AC02-05CH11231; SC00112704; AC03-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 1; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Hadron-Hadron Scattering

Citation Formats

Aad, G. Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 TeV. United States: N. p., 2015. Web. doi:10.1007/JHEP01(2015)068.
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Aad, G. Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 TeV. United States. https://doi.org/10.1007/JHEP01(2015)068
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Aad, G. Wed . "Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 TeV". United States. https://doi.org/10.1007/JHEP01(2015)068. https://www.osti.gov/servlets/purl/1224103.
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@article{osti_1224103,
title = {Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 TeV},
author = {Aad, G.},
abstractNote = {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.]},
doi = {10.1007/JHEP01(2015)068},
journal = {Journal of High Energy Physics (Online)},
number = 1,
volume = 2015,
place = {United States},
year = {Wed Jan 14 00:00:00 EST 2015},
month = {Wed Jan 14 00:00:00 EST 2015}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1007/JHEP01(2015)068
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Figures / Tables:

Figure 1 Figure 1: Distribution of the muon speed, $β$ , from the calorimeter (left) and combined measurements of calorimeter and muon spectrometer (right) obtained for selected $Z$ $\rightarrow$ $μμ$ events in data (points) and smeared MC simulation (line).
All figures and tables (19 total)
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    • DOI: 10.3204/pubdb-2018-02260
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      Figures / Tables found in this record:

      Figure 1 (p. 8)figure
      Table 1 (p. 10)table
      Table 2 (p. 15)table
      Table 3 (p. 16)table
      Table 4 (p. 19)table
      Table 5 (p. 19)table
      Figure 2 (p. 20)figure
      Figure 3 (p. 21)figure
      Figure 4 (p. 22)figure
      Figure 5 (p. 23)figure
      Figure 6 (p. 24)figure
      Table 6 (p. 24)table
      Figure 7 (p. 25)figure
      Figure 8 (p. 25)figure
      Table 7 (p. 26)table
      Figure 10 (p. 27)figure
      Figure 9 (p. 27)figure
      Table 8 (p. 28)table
      Figure 11 (p. 29)figure
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