Introduction to Soft-Collinear Effective Theory by Thomas BecherIntroduction to Soft-Collinear Effective Theory by Thomas Becher

Introduction to Soft-Collinear Effective Theory

byThomas Becher, Alessandro Broggio, Andrea Ferroglia

Paperback | June 9, 2015

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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.

Title:Introduction to Soft-Collinear Effective TheoryFormat:PaperbackDimensions:206 pagesPublished:June 9, 2015Publisher:Springer-Verlag/Sci-Tech/TradeLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:3319148478

ISBN - 13:9783319148472

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Table of Contents

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.