<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math>Evolution of the Neutron Spin Structure Moments using a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">H</mml:mi><mml:mi mathvariant="normal">e</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mn>3</mml:mn></mml:mmultiscripts></mml:math>Target
Bibliographic record
Abstract
We have measured the spin structure functions ${g}_{1}$ and ${g}_{2}$ of $^{3}\mathrm{H}\mathrm{e}$ in a double-spin experiment by inclusively scattering polarized electrons at energies ranging from 0.862 to 5.058 GeV off a polarized $^{3}\mathrm{H}\mathrm{e}$ target at a $15.5\ifmmode^\circ\else\textdegree\fi{}$ scattering angle. Excitation energies covered the resonance and the onset of the deep inelastic regions. We have determined for the first time the ${Q}^{2}$ evolution of ${\ensuremath{\Gamma}}_{1}({Q}^{2})={\ensuremath{\int}}_{0}^{1}{g}_{1}(x,{Q}^{2})dx$, ${\ensuremath{\Gamma}}_{2}({Q}^{2})={\ensuremath{\int}}_{0}^{1}{g}_{2}(x,{Q}^{2})dx$, and ${d}_{2}({Q}^{2})={\ensuremath{\int}}_{0}^{1}{x}^{2}[2{g}_{1}(x,{Q}^{2})+3{g}_{2}(x,{Q}^{2})]dx$ for the neutron in the range $0.1\ensuremath{\le}{Q}^{2}\ensuremath{\le}0.9\text{ }\text{ }{\mathrm{G}\mathrm{e}\mathrm{V}}^{2}$ with good precision. ${\ensuremath{\Gamma}}_{1}({Q}^{2})$ displays a smooth variation from high to low ${Q}^{2}$. The Burkhardt-Cottingham sum rule holds within uncertainties and ${d}_{2}$ is nonzero over the measured range.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.042 | 0.011 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".