TL;DR
This pedagogical paper reviews deep inelastic scattering in QCD, covering theoretical foundations, recent measurements of the strong coupling constant, and low-x physics, highlighting unresolved theoretical challenges.
Contribution
It provides an accessible overview of QCD topics related to deep inelastic scattering, including recent experimental results and theoretical issues like low-x resummations.
Findings
Recent determinations of α_s from deep-inelastic scattering
Discussion of low-x physics and resummation needs
Identification of unresolved theoretical problems in QCD
Abstract
This is the written version of the lecture on deep inelastic scattering and related topics in QCD, delivered in the course of the XXVI International Meeting on Fundamental Physics to an audience of young experimentalists. The aim is fundamentally pedagogical. I review the theoretical setting of the Altarelli-Parisi equations, discuss recent determinations of from deep-inelastic scattering and then move to the kinematical region explored by HERA. In the way I mention some unsolved theoretical problems. I discuss low-x physics and to what extent resummations are called for.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · Quantum and Classical Electrodynamics