2008/08/31 by Alberto Accardi, A. Accardi, Wally Melnitchouk +1 · 2 citations
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.1016/j.physletb.2008.10.036
published as Phys.Lett.B670:114-118,2008 · 7 pages, 2 figures, to appear in Phys. Lett. B
arxiv created 2008/10/24 · openalex publication_date 2008/10/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We derive target mass corrections (TMC) for the spin-dependent nucleon structure function g1 and polarization asymmetry A1 in collinear factorization at leading twist. The TMCs are found to be significant for g1 at large xB, even at relatively high Q2 values, but largely cancel in A1. A comparison of TMCs obtained from collinear factorization and from the operator product expansion shows that at low Q2 the corrections drive the proton A1 in opposite directions.