Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Angular distributions in $t{\bar t}H (H\rightarrow b\bar{b})$
  reconstructed events at the LHC   The associated production of a Higgs boson and a top-quark pair, $t{\bar t}
H$, in proton-proton collisions is addressed in this paper for a center of mass
energy of 13TeV at the LHC. Dileptonic final states of $t{\bar t}H$ events with
two oppositely charged leptons and four jets from the decays $t\rightarrow bW^+
\rightarrow b \ell^+\nu_\ell$, $\bar{t}\rightarrow \bar{b}W^- \rightarrow
\bar{b} \ell^-\bar{\nu}_\ell$ and $h\rightarrow b\bar{b}$, are used. Signal
events, generated with MadGraph5_aMC@NLO, are fully reconstructed by applying a
kinematic fit. New angular distributions of the decay products as well as
angular asymmetries are explored in order to improve discrimination of $t{\bar
t} H$ signal events over the dominant irreducible background contribution,
$t{\bar t}b{\bar b}$. Even after the full kinematic fit reconstruction of the
events, the proposed angular distributions and asymmetries are still quite
different in the $t\bar{t}H$ signal and the dominant background
($t\bar{t}b\bar{b}$).

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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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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: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: funct-an
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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: gr-qc
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The categories of this paper are: stat