Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for Higgs boson decays into a $Z$ boson and a light hadronically
  decaying resonance using 13 TeV $pp$ collision data from the ATLAS detector   A search for Higgs boson decays into a $Z$ boson and a light resonance in
two-lepton plus jet events is performed, using a $pp$ collision dataset with an
integrated luminosity of 139 fb$^{-1}$ collected at $\sqrt{s}=13$ TeV by the
ATLAS experiment at the CERN LHC. The resonance considered is a light boson
with a mass below 4 GeV from a possible extended scalar sector, or a charmonium
state. Multivariate discriminants are used for the event selection and for
evaluating the mass of the light resonance. No excess of events above the
expected background is found. Observed (expected) 95$\% $ confidence-level
upper limits are set on the Higgs boson production cross section times
branching fraction to a $Z$ boson and the signal resonance, with values in the
range 17 pb to 340 pb ($16^{+6}_{-5}$ pb to $320^{+130}_{-90}$ pb) for the
different light spin-0 boson mass and branching fraction hypotheses, and with
values of 110 pb and 100 pb ($100^{+40}_{-30}$ pb and $100^{+40}_{-30}$ pb) for
the $\eta_c$ and $J/\psi$ hypotheses, respectively.

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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph