Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct constraint on the Higgs-charm coupling from a search for Higgs
  boson decays into charm quarks with the ATLAS detector   A search for the Higgs boson decaying into a pair of charm quarks is
presented. The analysis uses proton-proton collisions to target the production
of a Higgs boson in association with a leptonically decaying $W$ or $Z$ boson.
The dataset delivered by the LHC at a centre-of-mass energy of $\sqrt{s}=13$
TeV and recorded by the ATLAS detector corresponds to an integrated luminosity
of 139 fb$^{-1}$. Flavour-tagging algorithms are used to identify jets
originating from the hadronisation of charm quarks.
  The analysis method is validated with the simultaneous measurement of $WW,WZ$
and $ZZ$ production, with observed (expected) significances of $2.6$ ($2.2$)
standard deviations above the background-only prediction for the $(W/Z)Z(\to
c\bar{c})$ process and $3.8$ ($4.6$) standard deviations for the $(W/Z)W(\to
cq)$ process. The $(W/Z)H(\to c \bar{c})$ search yields an observed (expected)
upper limit of $26$ ($31$) times the predicted Standard Model cross-section
times branching fraction for a Higgs boson with a mass of 125 GeV,
corresponding to an observed (expected) constraint on the charm Yukawa coupling
modifier $|\kappa_c| < 8.5 (12.4)$, at the 95% confidence level.
  A combination with the ATLAS $(W/Z)H, H\to b\bar{b}$ analysis is performed,
allowing the ratio $\kappa_c / \kappa_b$ to be constrained without assumptions
about the width of the Higgs boson. The ratio is constrained to be $|\kappa_c /
\kappa_b| < 4.5$ at the 95% confidence level, smaller than the ratio of the
$b$- and $c$-quark masses, and therefore determines the Higgs-charm coupling to
be weaker than the Higgs-bottom coupling at the 95% confidence level.

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The categories of this paper are: econ
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: math
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The categories of this paper are: q-fin
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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: solv-int
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The categories of this paper are: astro-ph