A direct Measurement of the W Boson Width in ppbar Collisions at sqrt(s) = 1.96 TeV

CDF Collaboration: T. Aaltonen; et al

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A direct Measurement of the W Boson Width in ppbar Collisions at sqrt(s) = 1.96 TeV

CDF Collaboration: T. Aaltonen, et al

High Energy Physics - Experiment · Submitted 22 Oct 2007

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The result is G_W = 2032 +/- 45 (stat.) +/- 57 (syst.) MeV, consistent with the standard model expectation.

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arXiv ID0710.4112 (version 3)

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CitationCDF Collaboration: T. Aaltonen, et al. "A direct Measurement of the W Boson Width in ppbar Collisions at sqrt(s) = 1.96 TeV." arXiv:0710.4112 (2007). https://pith.science/paper/DYKWNOGU

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.12 · human participants 0.02 · controlled comparison 0.07 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.51 · mentions code or data availability 0.02.

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arXiv listing abstract v3. Results and the main claim are underlined; show every role.

A direct measurement of the total decay width of the W boson G_W is presented using 350 pb-1 of data from ppbar collisions at sqrt(s) = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. The width is determined by normalizing predicted signal and background distributions to 230185 W candidates decaying to enu and munu in the transverse-mass region 50 < M_T < 90 GeV and then fitting the predicted shape to 6055 events in the high-M_T region, 90 < M_T < 200 GeV. The result is G_W = 2032 +/- 45 (stat.) +/- 57 (syst.) MeV, consistent with the standard model expectation.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	A direct measurement of the total decay width of the W boson G_W is presented using 350 pb-1 of data from ppbar collisions at sqrt(s) = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron.	contribution 0.94	0.96	0.08	asserted 1.00
s1	The width is determined by normalizing predicted signal and background distributions to 230185 W candidates decaying to enu and munu in the transverse-mass region 50 < M_T < 90 GeV and then fitting the predicted shape to 6055 events in the high-M_T region, 90 < M_T < 200 GeV.	method 1.00	0.95	0.03	asserted 1.00
s2	The result is G_W = 2032 +/- 45 (stat.) +/- 57 (syst.) MeV, consistent with the standard model expectation.	result 1.00	0.97	0.96	asserted 0.82

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 0.89.

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The paper

Original abstract

A direct measurement of the total decay width of the W boson G_W is presented using 350 pb-1 of data from ppbar collisions at sqrt(s) = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. The width is determined by normalizing predicted signal and background distributions to 230185 W candidates decaying to enu and munu in the transverse-mass region 50 < M_T < 90 GeV and then fitting the predicted shape to 6055 events in the high-M_T region, 90 < M_T < 200 GeV. The result is G_W = 2032 +/- 45 (stat.) +/- 57 (syst.) MeV, consistent with the standard model expectation.

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References

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Probability-based Estimates of the Uncalculated N$^5$LO QCD Contribution to the Hadronic $W$-Boson Decay Width
hep-ph 2026-08 conditional novelty 4.0 of 10

After applying the Principle of Maximum Conformality to remove scale ambiguities, Bayesian analysis bounds the N^5LO QCD correction to the W hadronic width at 1.0e-5 (95.5% credible interval).
The Physics potential of the CEPC. Prepared for the US Snowmass Community Planning Exercise (Snowmass 2021)
hep-ph 2022-05 conditional novelty 4.0 of 10

With 20 inverse attobarns at 240 GeV and 100 at the Z pole, the proposed CEPC could measure the Higgs width to about 1.1% and most Higgs couplings five to thirty times better than the high-luminosity LHC.

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10 arXiv papers cite this in 11 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 6 sentences without a confident label

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The contribution in Eq. ([ref]) should be compared against the current experimental value for the $W$ width, dominated by measurements at the Tevatron [ref] , [equation] Given the agreement of this with SM expectations for $W→ℓν$ and $W→$hadrons, we limit the contribution of the $μνV$ mode to the $W$ width to twice its error, leading to a branching [equation] at $2σ$.

Constraints on muon-specific dark forces · High-energy constraints · 0.97
Including also the recent result on $$ based on Run-II data by CDF [ref] , the combined results are: $= 80429±39$, $= 2078±87$.[The combined Tevatron result quoted for $$ and used here does not take into account the very recently published CDF result based on Run-II data, $= 2.032±0.073$ [ref] .] Combining these results with the preliminary combination [ref] ,

Precision Electroweak Measurements and Constraints on the Standard Model · Measurements · 0.90
CDF has the most precise measurement of this quantity, based on 350 pb$^-1$ of data: $Γ_W$ = 2032 $±$ 71 MeV/$c^2$, in good agreement with SM predictions [ref] .

Electroweak and Top Physics at the Tevatron and Indirect Higgs Limits · Direct $W$ Width Measurement · 0.91

Compares with it 1 paper

The comparison in <ref> shows recent experimental measurements of the hadronic $W$-boson decay width [ref] with the result obtained in this work.

Probability-based Estimates of the Uncalculated N$^5$LO QCD Contribution to the Hadronic $W$-Boson Decay Width · Phenomenological implications · 0.97

What it cites · 1 sentence without a confident label

Uses data or values from 1 paper

A further combinatioon with the preliminary value obtained from $e^+e^-$ collisions, $Γ_W = 2196 ±84$ MeV [ref] , gives a new world average value of $Γ_W = 2106 ±50$ MeV, in good agreement with the SM prediction.

A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model · Introduction · 0.98

Cites as background 1 paper

The components of the CDF II detector relevant to this analysis are described briefly here; a more complete description can be found elsewhere [ref] .

First Run II Measurement of the W Boson Mass · Introduction · 0.88

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