Measurement of the mass and the width of the W boson at LEP

Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Gurtu, A. ; et., al (2006) Measurement of the mass and the width of the W boson at LEP European Physical Journal C (EPJ C), The Particles and Fields, 45 (3). pp. 569-587. ISSN 1434-6044

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Official URL: http://www.springerlink.com/content/050713q79t0353...

Related URL: http://dx.doi.org/10.1140/epjc/s2005-02459-6

Abstract

The mass and the total decay width of the W boson are measured with the L3 detector at the LEP e +e -collider using W-boson pairs produced in 0.7 fb −1 of data collected at centre-of-mass energies between 161 and 209 GeV. Combining semileptonic and fully-hadronic final states, the mass and the width of the W boson are determined to be mW± 80.270 ±0.046 ± 0.031 GeV and Γ W = 2.18 ± 0.11 ± 0.09 GeV , where the first uncertainty is statistical and the second systematic.

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