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Measurement of the mass and width of the W boson in e+e- collisions at √s = 189 GeV

Abreu, P.; Almehed, Sverker LU ; Hedberg, Vincent LU ; Zacharatou Jarlskog, Christina LU ; Jarlskog, Göran LU ; Mjörnmark, Ulf LU ; Nygren, Andreas LU ; Smirnova, Oxana LU ; Tyapkin, Pavel LU and Zimin, N. I., et al. (2001) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 511(2-4). p.159-177
Abstract
A measurement of the W mass and width has been performed by the DELPHI Collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb-1 and an average centre-of-mass energy of 188.6 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W- → lvlqq′ and W+W- → qq′qq′ channels. The W mass result for the 1998 data set is MW = 80.387 ± 0.087(stat) ± 0.034(syst) ± 0.017(LEP) ± 0.035(FSI) GeV/c2, where FSI represents the uncertainty due to final state interaction effects in the qq′qq′ channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator. Combining this result with those previously... (More)
A measurement of the W mass and width has been performed by the DELPHI Collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb-1 and an average centre-of-mass energy of 188.6 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W- → lvlqq′ and W+W- → qq′qq′ channels. The W mass result for the 1998 data set is MW = 80.387 ± 0.087(stat) ± 0.034(syst) ± 0.017(LEP) ± 0.035(FSI) GeV/c2, where FSI represents the uncertainty due to final state interaction effects in the qq′qq′ channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator. Combining this result with those previously published by the DELPHI Collaboration gives the result MW = 80.359 ± 0.074(stat) ± 0.032(syst) ± 0.017(LEP) ± 0.033(FSI) GeV/c2. The combined value for the W width is λW = 2.266 ± 0.176(stat)± 0.056(syst)± 0.052(FSI) GeV/c2. (Less)
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publication status
published
subject
keywords
article, electron, energy, luminance, measurement
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
511
issue
2-4
pages
19 pages
publisher
Elsevier
external identifiers
  • scopus:10944259833
ISSN
0370-2693
DOI
10.1016/S0370-2693(01)00453-1
language
English
LU publication?
yes
id
6b77a09b-ced3-4cfd-9724-be5f5b9a743c
date added to LUP
2019-08-16 15:03:15
date last changed
2019-08-18 05:02:08
@article{6b77a09b-ced3-4cfd-9724-be5f5b9a743c,
  abstract     = {A measurement of the W mass and width has been performed by the DELPHI Collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb-1 and an average centre-of-mass energy of 188.6 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W- → lvlqq′ and W+W- → qq′qq′ channels. The W mass result for the 1998 data set is MW = 80.387 ± 0.087(stat) ± 0.034(syst) ± 0.017(LEP) ± 0.035(FSI) GeV/c2, where FSI represents the uncertainty due to final state interaction effects in the qq′qq′ channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator. Combining this result with those previously published by the DELPHI Collaboration gives the result MW = 80.359 ± 0.074(stat) ± 0.032(syst) ± 0.017(LEP) ± 0.033(FSI) GeV/c2. The combined value for the W width is λW = 2.266 ± 0.176(stat)± 0.056(syst)± 0.052(FSI) GeV/c2. },
  author       = {Abreu, P. and Almehed, Sverker and Hedberg, Vincent and Zacharatou Jarlskog, Christina and Jarlskog, Göran and Mjörnmark, Ulf and Nygren, Andreas and Smirnova, Oxana and Tyapkin, Pavel and Zimin, N. I. and Zupan, M. and , },
  issn         = {0370-2693},
  keyword      = {article,electron,energy,luminance,measurement},
  language     = {eng},
  month        = {07},
  number       = {2-4},
  pages        = {159--177},
  publisher    = {Elsevier},
  series       = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {Measurement of the mass and width of the W boson in e+e- collisions at √s = 189 GeV},
  url          = {http://dx.doi.org/10.1016/S0370-2693(01)00453-1},
  volume       = {511},
  year         = {2001},
}