Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the $c$-jet mistagging efficiency in $t\bar{t}$ events
  using $pp$ collision data at $\sqrt{s}=13$ TeV collected with the ATLAS
  detector   A technique is presented to measure the efficiency with which $c$-jets are
mistagged as b-jets (mistagging efficiency) using $t\bar{t}$ events, where one
of the $W$ bosons decays into an electron or muon and a neutrino and the other
decays into a quark-antiquark pair. The measurement utilises the relatively
large and known $W\to cs$ branching ratio, which allows a measurement to be
made in an inclusive $c$-jet sample. The data sample used was collected by the
ATLAS detector at $\sqrt{s} = 13$ TeV and corresponds to an integrated
luminosity of 139 fb$^{-1}$. Events are reconstructed using a kinematic
likelihood technique which selects the mapping between jets and $t\bar{t}$
decay products that yields the highest likelihood value. The distribution of
the $b$-tagging discriminant for jets from the hadronic $W$ decays in data is
compared with that in simulation to extract the mistagging efficiency as a
function of jet transverse momentum. The total uncertainties are in the range
3%-17%. The measurements generally agree with those in simulation but there are
some differences in the region corresponding to the most stringent $b$-jet
tagging requirement.

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The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph