TL;DR
This paper reports a precise measurement of the W boson mass at LEP2, combining data from various energies and carefully evaluating systematic uncertainties, also providing a measurement of the W width.
Contribution
It presents a new, high-precision measurement of the W boson mass and width from LEP2 data, with detailed systematic error analysis.
Findings
W boson mass measured as 80.450 +/- 0.039 GeV/c^2
Systematic errors thoroughly evaluated
Measurement of W width included
Abstract
The mass of the W boson has been measured by the LEP collaborations from the data recorded during the LEP2 programme at e+ e- centre of mass energies from 161 to 209 GeV, giving the result : mw = 80.450 +/- 0.039 GeV/c^2. This paper discusses the measurements of the W Mass from direct reconstruction of the invariant mass of the WW decay products, particular emphasis is placed on the evaluation of systematic errors. Results on the direct measurement of the W width are also presented.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · International Science and Diplomacy · Distributed and Parallel Computing Systems