Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental QCD summary (ICHEP 2020)   This writeup summarizes the main experimental studies of the strong
interaction, theoretically described by quantum chromodynamics (QCD), that were
presented during the ICHEP-2020 conference. The latest results, measured mostly
in p-p collisions at the LHC, are categorized in seven broad topics: (i)
Extractions of the strong coupling constant $\alpha_s(m_{\rm Z})$; (ii)
Comparison of data to fixed-order (N$^{\rm n}$LO) perturbative QCD
calculations; (iii) Determinations of parton distribution functions (PDFs);
(iv) Comparison of data to resummed (N$^{\rm n}$LL) pQCD calculations; (v)
Parton showering and jet substructure analyses; (vi) Semihard (double parton
interactions, multiparton interactions, hard diffraction), and soft (elastic
and diffractive) QCD scatterings; and (vii) Studies of parton hadronization in
$\rm e^+e^-$ and p-p collisions.

5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math