Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved bounds on W-W' mixing with ATLAS resonant WZ production data at
  the LHC at $\sqrt{s}=13$ TeV   New charged vector bosons $W'$ decaying into gauge boson pairs $WZ$ are
predicted in many scenarios of new physics, including models with an extended
gauge sector (EGM). Due to the large variety of models (other unification
groups, models with Supersymmetry, Little Higgs Models, Extra Dimensions) the
more general EGM approach is here considered. For what concerns
$W'$-production, these models are parametrised by two parameters, the
$W^\prime$ mass $M_{W^\prime}$ and the $W$-$W^\prime$ mixing parameter $\xi$.
The diboson $WZ$ production allows to place stringent constraints on this
mixing angle and the $W'$ mass, which we determine and present for the first
time by using data from $pp$ collisions at $\sqrt{s}=13$ TeV recorded by the
ATLAS detector at the CERN LHC, with integrated luminosity of 36.1 fb$^{-1}$.
By comparing the experimental limits to the theoretical predictions for the
total cross section of $W'$ resonant production and its subsequent decay into
$WZ$ pairs, we show that the derived constraints on the mixing angle for the
benchmark model are rather small, between $10^{-4}$ and $10^{-3}$, i.e.,
greatly improved with respect to those derived from the global analysis of
electroweak data which yield $\xi\sim 10^{-2}$. We combine the limits derived
from $WZ$ production data with those obtained from the $W'\to e\nu$ process in
order to significantly extend the exclusion region in the $M_{W'}$-$\xi$
parameter plane and obtain the most stringent exclusion limits to date. We
present the combined allowed parameter space for the EGM $W'$ boson after
incorporating indirect constraints from low energy electroweak data, direct
search constraints from Tevatron and from the LHC Run I with 7 and 8 TeV as
well as at Run II with 13 TeV data.

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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat