(2) If the sea SU(2) symmetry is further assumed, ¯ u(x) = ¯d(x), we obtain the Quark Parton Model (QPM) prediction for GSR, to be 1 /3

reduces to S G = 1 3 + 2 3 ∫ 1 0 [ ¯u(x) −¯d(x) ] dx

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hep-ph · 2026-05-19 · unverdicted · novelty 3.0

NNLO global fits to HERA and ATLAS data yield an asymmetric proton sea with ubar exceeding dbar at moderate x and a revised Gottfried sum rule value.

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Redetermination of proton sea distributions hep-ph · 2026-05-19 · unverdicted · none · ref 1
NNLO global fits to HERA and ATLAS data yield an asymmetric proton sea with ubar exceeding dbar at moderate x and a revised Gottfried sum rule value.