Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for the Higgs boson produced in association with a $W$ boson and
  decaying to four $b$-quarks via two spin-zero particles in $pp$ collisions at
  13 TeV with the ATLAS detector   This paper presents a dedicated search for exotic decays of the Higgs boson
to a pair of new spin-zero particles, $H \rightarrow aa$, where the particle
$a$ decays to $b$-quarks and has a mass in the range of 20-60 GeV. The search
is performed in events where the Higgs boson is produced in association with a
$W$ boson, giving rise to a signature of a lepton (electron or muon), missing
transverse momentum, and multiple jets from $b$-quark decays. The analysis is
based on the full dataset of $pp$ collisions at $\sqrt{s} = 13$ TeV recorded in
2015 by the ATLAS detector at the CERN Large Hadron Collider, corresponding to
an integrated luminosity of 3.2 fb$^{-1}$. No significant excess of events
above the Standard Model prediction is observed, and a $95\%$ confidence-level
upper limit is derived for the product of the production cross section for $pp
\rightarrow WH$ times the branching ratio for the decay $H \rightarrow aa
\rightarrow 4b$. The upper limit ranges from 6.2 pb for an $a$-boson mass $m_a
= 20$ GeV to 1.5 pb for $m_a = 60$ GeV.

6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph