Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The top quark charge asymmetry in $t\bar{t}\gamma$ production at the LHC   We consider the top quark charge asymmetry in the process $pp \to
t\bar{t}+\gamma$ at the 13 TeV LHC. The genuine tree level asymmetry in the
$q\bar{q}$ channel is large with about -12%. However, the symmetric $gg$
channel, photon radiation off top quark decay products, and higher order
corrections wash out the asymmetry and obscure its observability. In this work,
we investigate these effects at next-to-leading order QCD and check the
robustness of theoretical predictions. We find a sizable perturbative
correction and discuss its origins and implications. We also study dedicated
cuts for enhancing the asymmetry and show that a measurement is possible with
an integrated luminosity of 150 fb$^{-1}$.

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The categories of this paper are: cs
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
2
The categories of this paper are: math