Measurements of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mi>μ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">¯</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mrow><mml:mi>μ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>-induced coherent charged pion production cross sections on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> by the T2K experiment
Bibliographic record
Abstract
We report an updated measurement of the ${\ensuremath{\nu}}_{\ensuremath{\mu}}$-induced, and the first measurement of the ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$-induced coherent charged pion production cross section on $^{12}\mathrm{C}$ nuclei in the Tokai-to-Kamioka experiment. This is measured in a restricted region of the final-state phase space for which ${p}_{\ensuremath{\mu},\ensuremath{\pi}}>0.2\text{ }\text{ }\mathrm{GeV}$, $\mathrm{cos}({\ensuremath{\theta}}_{\ensuremath{\mu}})>0.8$ and $\mathrm{cos}({\ensuremath{\theta}}_{\ensuremath{\pi}})>0.6$, and at a mean (anti)neutrino energy of 0.85 GeV using the T2K near detector. The measured ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ charged current coherent pion production flux-averaged cross section on $^{12}\mathrm{C}$ is $(2.98\ifmmode\pm\else\textpm\fi{}0.37(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.31(\mathrm{syst}{)}_{\ensuremath{-}0.00}^{+0.49}({\mathrm{Q}}^{2}\text{ }\text{model}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}40}\text{ }\text{ }{\mathrm{cm}}^{2}$. The new measurement of the ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$-induced cross section on $^{12}\mathrm{C}$ is $(3.05\ifmmode\pm\else\textpm\fi{}0.71(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.39(\mathrm{syst}{)}_{\ensuremath{-}0.00}^{+0.74}({\mathrm{Q}}^{2}\text{ }\text{model}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}40}\text{ }\text{ }{\mathrm{cm}}^{2}$. The results are compatible with both the NEUT 5.4.0 Berger-Sehgal (2009) and GENIE 2.8.0 Rein-Sehgal (2007) model predictions.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.002 | 0.006 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.003 | 0.003 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.003 | 0.003 |
| Insufficient payload (model declined to judge) | 0.056 | 0.048 |
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".