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Title Resonant contributions to polarized proton structure functions
Abstract Nucleon resonance contributions to the polarized proton $g_1$ and $g_2$ structure functions are computed from resonance electroexcitation amplitudes extracted from CLAS exclusive meson electroproduction data. Including resonances in the mass range up to 1.75~GeV, and taking into account the interference between excited states, we compare the resonant contributions with the polarized proton structure function and polarization asymmetry data from Jefferson Lab 6~GeV measurements. All resonance-like structure observed in the polarized structure functions and asymmetries can be attributed to the resonant contributions, suggesting their essential role in the behavior of $g_1$ and $g_2$ at large parton momentum fraction $x$ in the resonant region over the entire range $Q^2 < 7.5$~GeV$^2$ covered by the measurements. Comparing the resonance contributions with the $g_1$ and $g_1$ structure functions computed from parton distribution functions extrapolated from the deep-inelastic region, we al
Author(s) A. Hiller Blin, Victor Mokeev, W. Melnitchouk
Publication Date March 2023
Document Type Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Theory & Comp Physics / THEORY CENTER / THEORY CENTER
Funding Source Nuclear Physics (NP)
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-THY-23-3739 OSTI Number: 1962528
LANL Number: arXiv:2212.11952 Other Number: DOE/OR/23177-5674
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Physical Review C
Refereed Yes
Volume 107
Issue
Page(s) 035202
Attachments/Datasets/DOI Link
Document(s)
paper63.pdf (STI Document)
PhysRevC.107.035202.pdf (Accepted Manuscript)
DOI Link
Dataset(s) (none)
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