Strange particle production rates for the neutral strange kaon and lambda at âs = 13 TeV with ATLAS
Bibliographic record
Abstract
After a long shutdown, the Large Hadron Collider (LHC) restarted activities in 2015 at center-of-mass energy √s = 13 TeV, up from √s = 8 TeV before its stop in 2012, producing new data at energies never before reached. At the end of this run, another long shutdown will take place in preparation for the LHC higher luminosity. During that time, the ATLAS experiment, like others, will be undergoing repairs and upgrades. A laboratory at McGill University will be testing the new small Thin Gap Chambers (sTGCs) for the replacement of the small muon detector wheels. First, the development of a reliable and robust control system for this facility is discussed. The core analysis follows, which is the measurement of the production rates of K^0_s and Λ particles at the new center-of-mass energy √s = 13 TeVusing data from ATLAS. It is the first time these measurements are done for this energy at the LHC. Mass measurements of 497.8 ± 0.3 (stat) MeV for the K^0_s and 1115.71 ± 0.02 (stat) MeV for the Λ are obtained and kinematic distributions are shown.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 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 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".