ATLAS provides first measurement of the W-boson width at the LHC

The measurement is the most precise yet made by a single experiment

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ATLAS collaboration

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10 April, 2024

Shows a W boson event display

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Shows W-boson width measurements — Comparison of the measured W-boson width with the Standard-Model prediction and with measurements from the LEP and Tevatron colliders. The vertical grey band illustrates the Standard-Model prediction, while the black dots and the associated horizontal bands represent the published experimental results. (Image: ATLAS/CERN)

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