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Combination of CDF and D0 Results on W Boson Mass and Width
High Energy Physics - Experiment · Submitted 18 Nov 2003
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We report a Tevatron collider average M_W = 80.456 +- 0.059 GeV.
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The abstract, sentence by sentence
The results based on 1992-95 data (Run 1) from the CDF and DO experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average M_W = 80.456 +- 0.059 GeV. We also report the Tevatron collider average of the directly measured W boson width Gamma_W = 2.115 +- 0.105 GeV. We describe a new joint analysis of the direct W mass and width measurements. Assuming the validity of the standard model, we combine the directly measured W boson width with the width extracted from the ratio of W and Z boson leptonic partial cross sections. This combined result for the Tevatron is Gamma_W = 2.135 +- 0.050 GeV. Finally, we use the measurements of the direct total W width and the leptonic branching ratio to extract the leptonic partial width Gamma(W -> e nu) = 224 +- 13 MeV.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The results based on 1992-95 data (Run 1) from the CDF and DO experiments on the measurements of the W boson mass and width are presented, along with the combined results. | contribution 0.82 | 0.73 | 0.07 | asserted 0.98 |
| s1 | We report a Tevatron collider average M_W = 80.456 +- 0.059 GeV. | result 1.00 | 0.91 | 0.41 | asserted 1.00 |
| s2 | We also report the Tevatron collider average of the directly measured W boson width Gamma_W = 2.115 +- 0.105 GeV. | result 1.00 | 0.91 | 0.17 | asserted 1.00 |
| s3 | We describe a new joint analysis of the direct W mass and width measurements. | contribution 0.96 | 0.90 | 0.04 | asserted 0.91 |
| s4 | Assuming the validity of the standard model, we combine the directly measured W boson width with the width extracted from the ratio of W and Z boson leptonic partial cross sections. | method 0.89 | 0.81 | 0.06 | asserted 0.78 |
| s5 | This combined result for the Tevatron is Gamma_W = 2.135 +- 0.050 GeV. | result 1.00 | 0.95 | 0.22 | asserted 1.00 |
| s6 | Finally, we use the measurements of the direct total W width and the leptonic branching ratio to extract the leptonic partial width Gamma(W -> e nu) = 224 +- 13 MeV. | result 0.98 | 0.94 | 0.10 | asserted 1.00 |
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The paper
Original abstract
The results based on 1992-95 data (Run 1) from the CDF and DO experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average M_W = 80.456 +- 0.059 GeV. We also report the Tevatron collider average of the directly measured W boson width Gamma_W = 2.115 +- 0.105 GeV. We describe a new joint analysis of the direct W mass and width measurements. Assuming the validity of the standard model, we combine the directly measured W boson width with the width extracted from the ratio of W and Z boson leptonic partial cross sections. This combined result for the Tevatron is Gamma_W = 2.135 +- 0.050 GeV. Finally, we use the measurements of the direct total W width and the leptonic branching ratio to extract the leptonic partial width Gamma(W -> e nu) = 224 +- 13 MeV.
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References
How the literature uses it
6 arXiv papers cite this in 7 sentences
Papers citing it · 5 sentences without a confident label
Uses its data or values 1 paper
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The experimental value of $M_W$ is obtained from both LEP 2 [ref] and Tevatron [ref] .
Effective Theories and Electroweak Precision Constraints · Corrections to EWPOs · 1.00
Cites it as background 1 paper
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At hadron colliders, such as the Fermilab Tevatron and the CERN LHC, the production of a high transverse-momentum lepton pair, known as Drell-Yan process [ref] , plays an important role: it allows, in the neutral current channel, to study the physics of the $Z$ boson and, in particular, to determine the effective weak mixing angle from the measurement of the forward-backward asymmetry [ref] ; in the charged current channel, a high precision determination of two fundamental parameters of the Standard Model, namely the mass and the decay width of the $W$ boson, can be obtained [ref] ; it provides, both in the neutral and charged current channel, stringent constraints on the density functions which describe the partonic content of the proton [ref] ; it can be used
Precision electroweak calculation of the production of a high transverse-momentum lepton pair at hadron colliders · Introduction · 0.91
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