Transverse moments of TMD parton densities and ultraviolet divergences

DOI10.1142/S0217732320300219zbMATH Open1455.81002arXiv2008.05351MaRDI QIDQ4964158

Ted Rogers

Publication date: 24 February 2021

Published in: Modern Physics Letters A (Search for Journal in Brave)

Abstract: I review some open questions relating to the large transverse momentum divergences in transverse moments of transverse momentum dependent (TMD) parton correlation func- tions. I also explain, in an abbreviated and summarized form, recent work that shows that the resulting violations of a commonly used integral relation are not perturbatively suppressed. I argue that this implies a need for more precise definitions for the correlation functions used to describe transverse moments.

Full work available at URL: https://arxiv.org/abs/2008.05351

zbMATH Keywords

perturbation theoryQCDtransverse momentum dependence

Mathematics Subject Classification ID

Strong interaction, including quantum chromodynamics (81V05) Perturbative methods of renormalization applied to problems in quantum field theory (81T15) Research exposition (monographs, survey articles) pertaining to quantum theory (81-02)

Cites Work

• Renormalization

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