Small-x factorization from effective field theory

Author(s)
Duff Neill, Aditya Pathak, Iain W. Stewart
Abstract

We derive a factorization theorem that allows for resummation of small-x logarithms by exploiting Glauber operators in the soft collinear effective field theory. Our analysis is carried out for the hadronic tensor Wμν in deep inelastic scattering, and leads to the definition of a new gauge invariant soft function Sμν that describes quark and gluon emission in the central region. This soft function provides a new framework for extending resummed calculations for coefficient functions to higher logarithmic orders. Our factorization also defines impact factors by universal collinear functions that are process independent, for instance being identical in small-x DIS and Drell-Yan.

Organisation(s)
Particle Physics
External organisation(s)
Los Alamos National Laboratory, Deutsches Elektronen-Synchrotron DESY, University of Manchester, Massachusetts Institute of Technology
Journal
Journal of High Energy Physics
Volume
2023
No. of pages
48
ISSN
1029-8479
DOI
https://doi.org/10.48550/arXiv.2303.13710
Publication date
09-2023
Peer reviewed
Yes
Austrian Fields of Science 2012
103012 High energy physics, 103014 Nuclear physics
Keywords
ASJC Scopus subject areas
Nuclear and High Energy Physics
Portal url
https://ucrisportal.univie.ac.at/en/publications/smallx-factorization-from-effective-field-theory(6cc2c85f-7a1d-405e-a4a8-1626998bb2de).html