Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for displaced vertices of oppositely charged leptons from decays
  of long-lived particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the
  ATLAS detector   A search for long-lived particles decaying into an oppositely charged lepton
pair, $\mu\mu$, $ee$, or $e\mu$, is presented using 32.8 fb$^{-1}$ of $pp$
collision data collected at $\sqrt{s}=13$ TeV by the ATLAS detector at the LHC.
Candidate leptons are required to form a vertex, within the inner tracking
volume of ATLAS, displaced from the primary $pp$ interaction region. No lepton
pairs with an invariant mass greater than 12 GeV are observed, consistent with
the background expectations derived from data. The detection efficiencies for
generic resonances with lifetimes ($c\tau$) of 100-1000 mm decaying into a
dilepton pair with masses between 0.1-1.0 TeV are presented as a function of
$p_T$ and decay radius of the resonances to allow the extraction of upper
limits on the cross sections for theoretical models. The result is also
interpreted in a supersymmetric model in which the lightest neutralino,
produced via squark-antisquark production, decays into $\ell^{+}\ell^{'-}\nu$
($\ell, \ell^{'} = e$, $\mu$) with a finite lifetime due to the presence of
R-parity violating couplings. Cross-section limits are presented for specific
squark and neutralino masses. For a 700 GeV squark, neutralinos with masses of
50-500 GeV and mean proper lifetimes corresponding to $c\tau$ values between 1
mm to 6 m are excluded. For a 1.6 TeV squark, $c\tau$ values between 3 mm to 1
m are excluded for 1.3 TeV neutralinos.

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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
0
The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga