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Perturbative quantum chromodynamics (QCD)
M. Cacciari, Y. Dokshitzer (emeritus), B. Fuks, H.-S. Shao
Quantum Chromodynamics (QCD), the theory that describes the dynamics of the strong interactions amongst the elementary particles, plays a vital role in our understanding of Nature. In particular, QCD dictates how fundamental phenomena occur at high-energy particle colliders like the Large Hadron Collider at CERN, and associated asymptotic freedom makes perturbative calculations in the parton (quark and gluon) language achievable at high scales (well above 1 GeV). Moreover, QCD consists in a powerful tool to explore particle physics in the framework of the Standard Model as well as of its extensions.
The QCD research activities at the LPTHE mainly include (but do not restrict to) the following aspects:
- jet physics: design of jet algorithms, jet (sub)structure studies and
applications at colliders; - perturbative QCD: higher-order quantum corrections both in QCD and in
the electroweak theory, resummation of QCD radiation; - understanding of the structure of the nucleon;
- flavour physics: dynamics of quarkonia and B-hadrons, open charm
issues.
