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SUSY and BSM Searches in ATLAS
Till Eifert, On behalf of the ATLAS Collaboration
SLAC National Accelerator Laboratory
2575 Sand Hill Road, Menlo Park, CA, USA
A brief report on supersymmetry (SUSY) and other beyond-SM (BSM) searches in
s = 7 TeV pp collisions using up to 4.7fbl'of ATLAS  data at the LHC is
presented. The shown results correspond to the status as of June 2012.
2 Supersymmetry searches
SUSY searches within ATLAS are grouped into R-parity conserving (RPC), and R-
parity violating (RPV) together with long-lived particle models. Searches for RPC
models are further divided into inclusive searches for strong production, searches for
third generation squarks (direct and indirect production), and electroweak production
(Xi, V>, i). In the following, results with less than 1.0 fbl'of data are omitted.
Table 1 lists the most relevant inclusive SUSY searches. Long cascade decays
are searched for both with and without leptons. Exclusion limits of the all-hadronic
search are shown in Fig. 1. The most stringent limits exclude squark and gluino masses
up to 1.4 TeV (for m ~i mg). The signature of GMSB models is to a large extent
determined by the next-to-lightest-SUSY-particle (NLSP). Depending on its nature
taus, photons, or Z bosons are emitted, which defines the corresponding searches.
Table 2 lists SUSY searches for third generation squarks. A light F is motivated by
naturalness arguments. Exclusion limits for a gluino-mediated F model and a direct
F production scenario are shown in Fig. 2. In the first scenario gluino masses are
excluded up to about 900 GeV for mro < 200 GeV, and a very-light [ is excluded by
the second search up to a mass of about 135 GeV. 1
Table 3 lists ATLAS searches for electroweak production. In a A -40 production
model where each decay proceeds via a i thus giving rise to large lepton mutliplicities,
gaugino masses are excluded up to 300 GeV .
Table 4 lists searches for RPV and long-lived scenarios. These searches typically
exploit experimentally challenging signatures, e.g. a displaced vertex, a disappearing
track, or a stable massive particle, or energy deposits in unpaired bunches. The search
for disappearing tracks  excludes non-prompt chargino masses up to 118 GeV.
'These values are derived from the -1 o observed limit contours.
Submitted to the Physics at LHC 2012 (PLHC 2012)
Vancouver, BC, Canada, June 4-9, 2012
Work supported in part by US Department of Energy under contract DE-AC02-76SF00515.
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Eifert, Till. SUSY and BSM Searches in ATLAS, article, July 16, 2013; United States. (digital.library.unt.edu/ark:/67531/metadc845871/m1/1/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.