Back to Search
Start Over
Measurement of the W boson Mass and Width in $e^{+}e^{-}$ Collisions at LEP
- Source :
- European Physical Journal C: Particles and Fields, European Physical Journal C: Particles and Fields, 2006, 47, pp.309-335. ⟨10.1140/epjc/s2006-02576-8⟩, European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2006, 47, pp.309-335. ⟨10.1140/epjc/s2006-02576-8⟩, The European Physical Journal C, 47 (2)
- Publication Year :
- 2006
- Publisher :
- HAL CCSD, 2006.
-
Abstract
- The mass of the W boson is determined from the direct reconstruction of W decays in WW→qq̄qq̄ and WW→ℓνqq̄ events in e+e- collisions at LEP. The data sample corresponds to an integrated luminosity of 683 pb-1 collected with the ALEPH detector at centre-of-mass energies up to 209 GeV. To minimise any effect from colour reconnection a new procedure is adopted in which low energy particles are not considered in the mass determination from the qq̄qq̄ channel. The combined result from all channels is mW=80.440±0.043(stat.)±0.024(syst.)±0.009(FSI)±0.009(LEP)GeV/c2,where FSI represents the possible effects of final state interactions in the qq̄qq̄ channel and LEP indicates the uncertainty in the beam energy. From two-parameter fits to the W mass and width, the W width is found to be ΓW=2.14±0.09(stat.)±0.04(syst.)±0.05(FSI)±0.01(LEP)GeV.<br />The European Physical Journal C, 47 (2)<br />ISSN:1434-6044<br />ISSN:1434-6052
- Subjects :
- Particle physics
Physics and Astronomy (miscellaneous)
Electron–positron annihilation
FOS: Physical sciences
Elementary particle
01 natural sciences
Systematic Uncertainty
High Energy Physics - Experiment
Nuclear physics
Particle decay
High Energy Physics - Experiment (hep-ex)
0103 physical sciences
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Invariant mass
Invariant Mass
010306 general physics
Nuclear Experiment
Engineering (miscellaneous)
Monte Carlo
Boson
Physics
Muon
Annihilation
010308 nuclear & particles physics
High Energy Physics::Phenomenology
Pair production
Boson Mass
Time Projection Chamber
High Energy Physics::Experiment
Astrophysics::Earth and Planetary Astrophysics
Particle Physics - Experiment
Subjects
Details
- Language :
- English
- ISSN :
- 14346044 and 14346052
- Database :
- OpenAIRE
- Journal :
- European Physical Journal C: Particles and Fields, European Physical Journal C: Particles and Fields, 2006, 47, pp.309-335. ⟨10.1140/epjc/s2006-02576-8⟩, European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2006, 47, pp.309-335. ⟨10.1140/epjc/s2006-02576-8⟩, The European Physical Journal C, 47 (2)
- Accession number :
- edsair.doi.dedup.....c70e37f02864c74abb694cc634639ef8
- Full Text :
- https://doi.org/10.1140/epjc/s2006-02576-8⟩