Proposes a Compton backscattering gamma facility at FCC-ee and projects 1.8-3.0% precision on Δg/g in the medium-x region via open-charm photoproduction on a polarized NH3 target.
Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
2 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
We have measured the spin-dependent structure function $g_1^p$ of the proton in deep inelastic scattering of polarized muons off polarized protons, in the kinematic range $0.003<x<0.7$ and $1\,\mbox{GeV}^2<Q^2<60\,\mbox{GeV}^2$. Its first moment, $\int_0^1 g_1^p(x) dx $, is found to be $0.136 \pm 0.011\,(\mbox{stat.})\pm 0.011\,(\mbox{syst.})$ at $Q^2=10\,\mbox{GeV}^2$. This value is smaller than the prediction of the Ellis--Jaffe sum rule by two standard deviations, and is consistent with previous measurements. A combined analysis of all available proton, deuteron and neutron data confirms the Bjorken sum rule to within $10\%$ of the theoretical value.
years
2026 2verdicts
UNVERDICTED 2representative citing papers
Computes spin-orbit correlation distributions for charmonium and B_c mesons by linking parity-odd EMT matrix elements to light-front dynamics.
citing papers explorer
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Probing Nucleon Spin Structure with a Polarized Gamma Beam from Compton Backscattering at FCC-ee
Proposes a Compton backscattering gamma facility at FCC-ee and projects 1.8-3.0% precision on Δg/g in the medium-x region via open-charm photoproduction on a polarized NH3 target.
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Spin-orbit correlation of quarks within quarkonium
Computes spin-orbit correlation distributions for charmonium and B_c mesons by linking parity-odd EMT matrix elements to light-front dynamics.