Experimental QCD summary (ICHEP 2020)

Abstract

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 ${\alpha }_s(m_{\mathrm{Z}})$; (ii) Comparison of data to fixed-order (N${}^{\mathrm{n}}$LO) perturbative QCD calculations; (iii) Determinations of parton distribution functions (PDFs); (iv) Comparison of data to resummed (N${}^{\mathrm{n}}$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 ${\mathrm{e}}^{+}{\mathrm{e}}^{-}$ and p-p collisions.

Proceeds. of Science (ICHEP-2020) to appear. 11 pages, 14 figures

References in corpus (3)

• Quantitative constraints on the gluon distribution function in the proton from collider isolated-photon data
• Effects of color reconnection on $t\bar{t}$ final states at the LHC
• Comparison of differential elastic cross sections in $pp$ and $p\bar{p}$ collisions as evidence of the existence of the colourless $C$-odd three-gluon state