Transverse momentum dependent distribution functions in the threshold limit

Autor: Zhong-Bo Kang, Kajal Samanta, Ding Yu Shao, Yang-Li Zeng
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-30 (2023)
Druh dokumentu: article
ISSN: 1029-8479
DOI: 10.1007/JHEP11(2023)220
Popis: Abstract We apply the joint threshold and transverse momentum dependent (TMD) factorization theorem to introduce new threshold-TMD distribution functions, including threshold-TMD parton distribution functions (PDFs) and fragmentation functions (FFs). We apply Soft-Collinear Effective Theory and renormalization group methods to carry out QCD evolution for both threshold-TMD PDFs and FFs. We show the universality of threshold-TMD functions among three standard processes, i.e. the Drell-Yan production in pp collisions, semi-inclusive deep-inelastic scattering and back-to-back two hadron production in e + e − collisions. In the end, we present the numerical predictions for different threshold-TMD functions and also transverse momentum distributions at pp, ep, and e + e − collisions.
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