We provide an elementary pedagogical introduction to some basic concepts and techniques of soft (or Sudakov) resummation, specifically in QCD, paying particular attention to simple but useful tricks of the trade. We briefly review collinear (Altarelli–Parisi) and infrared (eikonal) factorization, cancellation of infrared singularities, and factorization of mass singularities. We recall basic concepts on renormalization group invariance and the solution of renormalization group equations. We then show how threshold resummation can be derived from a renormalization group argument following from the cancellation of infrared singularities. We discuss various equivalent forms of the resummed result, and we briefly present transverse momentum resummation. Abstract Published by the Jagiellonian University 2026 authors
Building similarity graph...
Analyzing shared references across papers
Loading...
Stefano Forte
Giovanni Ridolfi
Acta Physica Polonica B
University of Milan
University of Genoa
Building similarity graph...
Analyzing shared references across papers
Loading...
Forte et al. (Wed,) studied this question.
www.synapsesocial.com/papers/69d895796c1944d70ce066cd — DOI: https://doi.org/10.5506/aphyspolb.57.4-a4