We note that the diﬀractive term is absent in the polarized quark helicity distributions ∆ q = qh=+ − qh=− and also in the quark valence contribution q − ¯q

= ¯Aq(X − h 0q )− 1x¯bq exp[(x + X − h 0q )/ ¯x] + 1 + ˜Aqx ˜bq exp(x/ ¯x) + 1 , (2) 2 deﬁned at the input energy scale Q2 0 = 1GeV 2

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hep-ph · 2026-07-01 · unverdicted · novelty 2.0

Upgraded quantum statistical parton model incorporates recent experimental data and analyzes entropy dependence on thermodynamical potentials.

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The Quantum Statistical Approach to Parton Distributions upgraded with recent experimental data hep-ph · 2026-07-01 · unverdicted · none · ref 2
Upgraded quantum statistical parton model incorporates recent experimental data and analyzes entropy dependence on thermodynamical potentials.