Becher / Broggio / Ferroglia Introduction to Soft-Collinear Effective Theory
2015
ISBN: 978-3-319-14848-9
Verlag: Springer International Publishing
Format: PDF
Kopierschutz: 1 - PDF Watermark
E-Book, Englisch, Band 896, 206 Seiten, eBook
Reihe: Lecture Notes in Physics
ISBN: 978-3-319-14848-9
Verlag: Springer International Publishing
Format: PDF
Kopierschutz: 1 - PDF Watermark
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.
Zielgruppe
Graduate
Autoren/Hrsg.
Weitere Infos & Material
Introduction.- The Strategy of Regions.- Scalar SCET.- Generalization to QCD.- Resummation by RG Evolution.- Threshold Resummation in Drell-Yan Production.- Transverse Momentum Resummation.- IR Divergences of Gauge Theory Amplitudes.- Outlook.- One-Loop Integrals.- Inverse Derivative Operator.- Momentum-space Freynman Rules for Soft Wilson Lines.- Wilson Lines and Gauge Transformations.- Decoupling Transformation and the Gluon Kinetic Term.- Color Space Formalism.- Anomalous Dimensions.
