Can $\overline{MS}$ parton distributions be negative?
Alessandro Candido, Stefano Forte, Felix Hekhorn
TL;DR
This paper discusses the positivity of $ar{MS}$ scheme parton distribution functions at NLO, providing a review and additional insights into the proof that PDFs are positive in this scheme.
Contribution
It offers a detailed review and supplementary material for the proof that $ar{MS}$ scheme PDFs are positive at NLO, clarifying previous uncertainties.
Findings
PDFs are positive at NLO in the $ar{MS}$ scheme
Additional proof-related material is provided
Clarifies the conditions for positivity of PDFs
Abstract
We review our recent paper, where we proved Parton distributions functions (PDFs) to be positive at NLO in the factorization scheme. We present some additional material that was useful in completing the steps for the actual proof, but we won't attempt to report on the full proof, but referring the reader to the paper itself.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research