Probing the Deuteron at Very Large Internal Momenta
Bibliographic record
Abstract
We measure $^{2}\mathrm{H}(e,{e}^{\ensuremath{'}}p)n$ cross sections at 4-momentum transfers of ${Q}^{2}=4.5\ifmmode\pm\else\textpm\fi{}0.5\text{ }\text{ }(\mathrm{GeV}/c{)}^{2}$ over a range of neutron recoil momenta ${p}_{r}$, reaching up to $\ensuremath{\sim}1.0\text{ }\text{ }\mathrm{GeV}/c$. We obtain data at fixed neutron recoil angles ${\ensuremath{\theta}}_{nq}=35\ifmmode^\circ\else\textdegree\fi{}$, 45\ifmmode^\circ\else\textdegree\fi{}, and 75\ifmmode^\circ\else\textdegree\fi{} with respect to the 3-momentum transfer $\stackrel{\ensuremath{\rightarrow}}{q}$. The new data agree well with previous data, which reached ${p}_{r}\ensuremath{\sim}500\text{ }\text{ }\mathrm{MeV}/c$. At ${\ensuremath{\theta}}_{nq}=35\ifmmode^\circ\else\textdegree\fi{}$ and 45\ifmmode^\circ\else\textdegree\fi{}, final state interactions, meson exchange currents, and isobar currents are suppressed and the plane wave impulse approximation provides the dominant cross section contribution. We compare the new data to recent theoretical calculations, where we observe a significant discrepancy for recoil momenta ${p}_{r}>700\text{ }\text{ }\mathrm{MeV}/c$.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.001 |
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 teacher head, 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".