Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for a Narrow Resonance in e+e- to Four Lepton Final States   Motivated by recent models proposing a hidden sector with $\sim$GeV scale
force carriers, we present a search for a narrow dilepton resonance in 4 lepton
final states using $536fb^{-1}$ collected by the BaBar detector. We search for
the reaction, $e^+e^-\to W^\prime W^\prime\to(l^+l^-)(l^{\prime+}l^{\prime-})$,
where the leptons carry the full 4-momentum and the two dilepton pair invariant
masses are equal. We do not observe a significant signal and we set 90% upper
limits of $\sigma(e^+e^-\to W^\prime W^\prime\to(e^+e^-)(e^+e^-))<(15-70) ab$,
$\sigma(e^+e^-\to W^\prime W^\prime\to(e^+e^-)(\mu^+\mu^-))<(15-40) ab$, and
$\sigma(e^+e^-\to W^\prime W^\prime\to(\mu^+\mu^-)(\mu^+\mu^-))<(11-17) ab$ in
the $W^\prime$ mass range between 0.24 and 5.3GeV. Under the assumption that
the $W^\prime$ coupling to electrons and muons is the same, we obtain a
combined upper limit of $\sigma(e^+e^-\to W^\prime
W^\prime\to(l^+l^-)(l^{\prime+}l^{\prime-}))<(25-60) ab$. Using these limits,
we constrain the product of the SM-dark sector mixing and the dark coupling
constant in the case of a non-Abelian Higgsed dark sector.

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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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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-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: cs
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The categories of this paper are: physics
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph