ENGLISH

Introduction to Soft-Collinear Effective Theory

By Thomas Becher , Alessandro Broggio , Andrea Ferroglia (auth.)

Book information

Publisher
Springer International Publishing
Year
2015
ISBN
978-3-319-14847-2, 978-3-319-14848-9
DOI
10.1007/978-3-319-14848-9
Language
english
Format
PDF
Filesize
3 MB (3196522 bytes)
Series
Lecture Notes in Physics 896
Edition
1
Pages
208\214
Time added
2015-04-23 16:00:00
Elementary ParticlesQuantum Field Theory; Quantum Field TheoriesString Theory

Description

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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