Measurement of the W boson mass with the Collider Detector at Fermilab
Bibliographic record
Abstract
We present a measurement of the W boson mass using data collected with the CDF detector during the 1994--1995 collider run at the Fermilab Tevatron. A fit to the transverse mass spectrum of a sample of 30115 $\stackrel{\ensuremath{\rightarrow}}{W}e\ensuremath{\nu}$ events recorded in an integrated luminosity of 84 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ gives a mass ${M}_{W}=80.473\ifmmode\pm\else\textpm\fi{}0.065(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.092(\mathrm{syst})\mathrm{GeV}{/c}^{2}.$ A fit to the transverse mass spectrum of a sample of 14740 $\stackrel{\ensuremath{\rightarrow}}{W}\ensuremath{\mu}\ensuremath{\nu}$ events from 80 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ gives a mass ${M}_{W}=80.465\ifmmode\pm\else\textpm\fi{}0.100(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.103(\mathrm{syst})\mathrm{GeV}{/c}^{2}.$ The dominant contributions to the sys- tematic uncertainties are the uncertainties in the electron energy scale and the muon momentum scale, $0.075\mathrm{GeV}{/c}^{2}$ and $0.085\mathrm{GeV}{/c}^{2},$ respectively. The combined value for the electron and muon channel is ${M}_{W}=80.470\ifmmode\pm\else\textpm\fi{}0.089\mathrm{GeV}{/c}^{2}.$ When combined with previously published CDF measurements, we obtain ${M}_{W}=80.433\ifmmode\pm\else\textpm\fi{}0.079\mathrm{GeV}{/c}^{2}.$
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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".