STI Publications - View Publication Form #17252
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Publication Information
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 |
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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)
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DOI Link | |
Dataset(s) | (none) |
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