On the positivity of MS parton distributions
Abstract
We revisit our argument that shows that parton distribution functions (PDFs) in the MS scheme are nonnegative in the perturbative region, with the dual goals of clarifying its theoretical underpinnings and elucidating its domain of validity. We specifically discuss recent results proving that PDFs can turn negative at sufficiently low scale, we clarify quantitatively various aspects of our derivation of positivity in the perturbative region, and we provide an estimate for the scale above which PDF positivity holds.
Main Authors
Format
Articles
Research article
Published
2024
Series
Subjects
Publication in research information system
Publisher
Springer
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202404092786Use this for linking
Review status
Peer reviewed
ISSN
1434-6044
DOI
https://doi.org/10.1140/epjc/s10052-024-12681-1
Language
English
Published in
European Physical Journal C
Citation
- Candido, A., Forte, S., Giani, T., & Hekhorn, F. (2024). On the positivity of MS parton distributions. European Physical Journal C, 84(3), Article 335. https://doi.org/10.1140/epjc/s10052-024-12681-1
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Funder(s)
Research Council of Finland
Research Council of Finland
Funding program(s)
Academy Research Fellow, AoF
Centre of Excellence, AoF
Akatemiatutkija, SA
Huippuyksikkörahoitus, SA
Additional information about funding
T. G. is supported by NWO via an ENW-KLEIN-2 project. F. H. is supported by the Academy of Finland project 358090 and is funded as a part of the Center of Excellence in Quark Matter of the Academy of Finland, project 346326.
Copyright© The Author(s) 2024