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LEP W measurements

In June 1996, the LEP center-of-mass energy was raised to 161 GeV, just above the threshold of pair-production of W bosons, and LEP2 experiments started. ALEPH, DELPHI, L3, and OPAL experiments observed the pair-production of W bosons for the first time in $e^{+}e^{-}$ collisions. Since then, the fou...

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Detalles Bibliográficos
Autor principal: Saeki, Takayuki
Lenguaje:eng
Publicado: 2001
Materias:
Acceso en línea:http://cds.cern.ch/record/2305218
Descripción
Sumario:In June 1996, the LEP center-of-mass energy was raised to 161 GeV, just above the threshold of pair-production of W bosons, and LEP2 experiments started. ALEPH, DELPHI, L3, and OPAL experiments observed the pair-production of W bosons for the first time in $e^{+}e^{-}$ collisions. Since then, the four experiments had been collecting data successfully at the energies of 161 - 209 GeV, and the data acquisition of LEP experiments was finished on 2nd November 2001. The total integrated luminosities amounted to about 710 pb$^{-1}$ per each experiment and about 46 k W-pair events were produced in total. In this article, the results on W physics in LEP2 are presented, which cover the total cross section of the W boson pair-production, the W decay branching fractions, the triple gauge-boson couplings and the mass of the W boson. All the results are consistent with the Standard Model expectations within the measurement errors.