EAN: 9783319148472

Bilder-Quelle: discount24.de - Sport-Freizeit

Among resummation techniques for perturbative QCD in the context of collider and flavor physics soft-collinear effective theory (SCET) has emerged as both a powerful and versatile tool having been applied to a large variety of processes from B-meson decays to jet production at the LHC. This book provides a concise pedagogical introduction to this technique. It discusses the expansion of Feynman diagrams around the high-energy limit followed by the explicit construction of the effective Lagrangian - first for a scalar theory then for QCD. The underlying concepts are illustrated with the quark vector form factor at large momentum transfer and the formalism is applied to compute soft-gluon resummation and to perform transverse-momentum resummation for the Drell-Yan process utilizing renormalization group evolution in SCET. Finally the infrared structure of n-point gauge-theory amplitudes is analyzed by relating them to effective-theory operators. This text is suitable for graduate students and non-specialist researchers alike as it requires only basic knowledge of perturbative QCD.

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25.06.2026 um 21:09 Uhr

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