Abstract
A measurement of the W boson mass and width has been performed by the DELPHI collaboration using the data collected during the full LEP2 programme (1996–2000). The data sample has an integrated luminosity of 660 pb-1 and was collected over a range of centre-of-mass energies from 161 to 209 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-→ℓν̄ℓqq̄’ and W+W-→qq̄’q̄q’ channels. The W mass result for the combined data set is \(M_W = 80.336 \pm0.055 ({\text{Stat.}}) \pm0.028 ({\text{Syst.}}) \pm0.025 ({\text{FSI}}) \pm0.009 ({\text{LEP}}) \text{GeV}/c^2, \)where FSI represents the uncertainty due to final state interaction effects in the qq̄’q̄q’ channel, and LEP represents that arising from the knowledge of the collision energy of the accelerator. The combined value for the W width is \({\Gamma_{W}} = 2.404 \pm0.140 ({\text{Stat.}}) \pm0.077 ({\text{Syst.}}) \pm0.065 ({\text{FSI}}) \text{GeV}/c^2. \)These results supersede all values previously published by the DELPHI collaboration.
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References
DELPHI Collaboration, P. Abreu et al., Phys. Lett. B 397, 158 (1997)
DELPHI Collaboration, P. Abreu et al., Eur. Phys. J. C 2, 581 (1998)
DELPHI Collaboration, P. Abreu et al., Phys. Lett. B 462, 410 (1999)
DELPHI Collaboration, P. Abreu et al., Phys. Lett. B 511, 159 (2001)
ALEPH Collaboration, S. Schael et al., Eur. Phys. J. C 47, 309 (2006)
L3 Collaboration, P. Achard et al., Eur. Phys. J. C 45, 569 (2006)
OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 45, 307 (2006)
CDF Collaboration, D0 Collaboration, Tevatron Electroweak Working Group, V.M. Abazov et al., Phys. Rev. D 70, 092008 (2004)
LEP Energy Working Group, R. Assmann et al., Eur. Phys. J. C 39, 253 (2005)
ALEPH Collaboration, R. Barate et al., Phys. Lett. B 464, 339 (1999)
L3 Collaboration, P. Achard et al., Phys. Lett. B 585, 42 (2004)
OPAL Collaboration, G. Abbiendi et al., Phys. Lett. B 604, 31 (2004)
DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 46, 295 (2006)
DELPHI Collaboration, P. Aarnio et al., Nucl. Instrum. Methods A 303, 233 (1991)
DELPHI Collaboration, P. Abreu et al., Nucl. Instrum. Methods A 378, 57 (1996)
DELPHI Silicon Tracker Group, P. Chochula et al., Nucl. Instrum. Methods A 412, 304 (1998)
S.J. Alvsvaag et al., Nucl. Instrum. Methods A 425, 106 (1999)
A. Ballestrero, R. Chierici, F. Cossutti, E. Migliore, Comput. Phys. Commun. 152, 175 (2003)
E. Accomando, A. Ballestrero, Comput. Phys. Commun. 99, 270 (1997)
E. Accomando, A. Ballestrero, E. Maina, Comput. Phys. Commun. 150, 166 (2003)
T. Sjöstrand et al., Comput. Phys. Commun. 135, 238 (2001)
S. Jadach, Z. Was, R. Decker, J.H. Kuehn, Comput. Phys. Commun. 76, 361 (1993)
S. Jadach, W. Placzek, M. Skrzypek, B.F.L. Ward, Z. Was, Phys. Lett. B 417, 326 (1998)
S. Jadach, W. Placzek, M. Skrzypek, B.F.L. Ward, Z. Was, Comput. Phys. Commun. 140, 432 (2001)
E. Barberio, Z. Was, Comput. Phys. Commun. 79, 291 (1994)
L. Lönnblad, Comput. Phys. Commun. 71, 15 (1992)
G. Corcella et al., JHEP 0101, 010 (2001)
DELPHI Collaboration, P. Abreu et al., Z. Phys. C 73, 11 (1996)
S. Jadach, B.F.L. Ward, Z. Was, Comput. Phys. Commun. 130, 260 (2000)
T. Sjöstrand, PYTHIA 5.7 and JETSET 7.4: Physics and manual, CERN-TH-7112-93-REV (1995)
P. Abreu et al., Nucl. Instrum. Methods A 427, 487 (1999)
G. Borisov, Nucl. Instrum. Methods A 417, 384 (1998)
DELPHI Collaboration, P. Abreu et al., Eur. Phys. J. C 10, 415 (1999)
S. Catani, Yu.L. Dokshitzer, M. Olsson, G. Turnock, B.R. Webber, Phys. Lett. B 269, 432 (1991)
N. Brown, W. Stirling, Z. Phys. C 53, 629 (1992)
Y.L. Dokshitzer, G.D. Leder, S. Moretti, B.R. Webber, JHEP 9708, 001 (1997)
L. Lönnblad, Z. Phys. C 58, 471 (1993)
DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 51, 249 (2007)
L3 Collaboration, P. Achard et al., Phys. Lett. B 561, 202 (2003)
OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 45, 291 (2006)
ALEPH Collaboration, S. Schael et al., Eur. Phys. J. C 47, 309 (2006)
Particle Data Group, S. Eidelman et al., Phys. Lett. B 592, 1 (2004)
H.A. Bethe, W. Heitler, Proc. R. Soc. London A 146, 83 (1934)
S. Jadach, W. Placzek, M. Skrzypek, B.F.L. Ward, Z. Was, Phys. Lett. B 523, 117 (2001)
F. Cossutti, Eur. Phys. J. C 44, 383 (2005)
A.P. Chapovsky, V.A. Khoze, Eur. Phys. J. C 9, 449 (1999)
A. Denner, S. Dittmaier, M. Roth, D. Wackeroth, Nucl. Phys. B 560, 33 (1999)
A. Denner, S. Dittmaier, M. Roth, D. Wackeroth, Nucl. Phys. B 587, 67 (2000)
F. Boudjema, B. Mele et al., Standard Model Process, Physics at LEP2, ed. by G. Altarelli, T. Sjöstrand, F. Zwirner, CERN 96-01 (1996) vol. 1, p. 207
DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 34, 127 (2004)
DELPHI Collaboration, J. Abdallah et al., Eur. Phys. J. C 44, 161 (2005)
ALEPH Collaboration, S. Schael et al., Phys. Lett. B 606, 265 (2005)
OPAL Collaboration, G. Abbiendi et al., Eur. Phys. J. C 36, 297 (2004)
L3 Collaboration, P. Achard et al., Phys. Lett. B 547, 139 (2002)
L. Lönnblad, T. Sjöstrand, Eur. Phys. J. C 2, 165 (1998)
V. Khoze et al., Colour Reconnection, Physics at LEP2, ed. by G. Altarelli, T. Sjöstrand, F. Zwirner, CERN 96-01 (1996), vol. 1, p. 191
T. Sjöstrand, V. Khoze, Z. Phys. C 62, 281 (1994)
T. Sjöstrand, V. Khoze, Phys. Rev. Lett. 72, 28 (1994)
G. Gustafson, J. Häkkinen, Z. Phys. C 64, 659 (1994)
L. Lönnblad, Z. Phys. C 70, 107 (1996)
L. Lyons, D. Gibaut, P. Clifford, Nucl. Instrum. Methods A 270, 110 (1988)
LEP2 Monte Carlo Workshop: Report of the Working Groups on Precision Calculations for LEP2 Physics, ed. by G. Passarino, R. Pittau, S. Jadach, CERN-2000-009 (2000)
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This paper is dedicated to the memory of Carlo Caso.
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Abdallah, J., Abreu, P., Adam, W. et al. Measurement of the mass and width of the W boson in e+e- collisions at \(\sqrt{s}\) = 161–209 GeV. Eur. Phys. J. C 55, 1–38 (2008). https://doi.org/10.1140/epjc/s10052-008-0585-7
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DOI: https://doi.org/10.1140/epjc/s10052-008-0585-7