TY - JOUR
T1 - On the positivity of MS¯ parton distributions
AU - Candido, Alessandro
AU - Forte, Stefano
AU - Giani, Tommaso
AU - Hekhorn, Felix
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024
Y1 - 2024
N2 - We revisit our argument that shows that parton distribution functions (PDFs) in the MS¯ scheme are non-negative 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.
AB - We revisit our argument that shows that parton distribution functions (PDFs) in the MS¯ scheme are non-negative 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.
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U2 - 10.1140/epjc/s10052-024-12681-1
DO - 10.1140/epjc/s10052-024-12681-1
M3 - Article
AN - SCOPUS:85189512347
SN - 1434-6044
VL - 84
SP - 1
EP - 12
JO - European Physical Journal C
JF - European Physical Journal C
M1 - 335
ER -