A measurement of the FV 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- --> l (v) over bar (l)q (q) over bar ' and W+W- --> q (q) over bar '(q) over barq ' channels. The W mass result for the 1998 data set is M-W = 80.387 +/- 0.087(stat) +/- 0.034(syst) +/- 0.017(LEP) +/- 0.035(FSI) GeV/c(2), where FSI represents the uncertainty due to final state interaction effects in the q (q) over bar 'q (q) over bar ' channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator Combining this result with Ghost: previously published by the DELPHI Collaboration gives the result M-W = 80.359 +/- 0.074(stat) +/- 0.032(syst) +/- 0.017(LEP) +/- 0.033(FSI) GeV/c(2). The combined value for the W width is Gamma (W) = 2.266 +/- 0.176(stat) +/- 0.056(syst) +/- 0.052(FSI) GeV/c(2). (C) 2001 Elsevier Science B.V. All rights reserved

Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., et al. (2001). Measurement of the mass and width of the W boson in e+e- collisions at √s = 189 GeV. PHYSICS LETTERS. SECTION B, 511(2-4), 159-177 [10.1016/S0370-2693(01)00453-1].

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

CALVI, MARTA;NEGRI, PIETRO;PAGANONI, MARCO;PULLIA, ANTONINO;RAGAZZI, STEFANO;Tabarelli, T;Terranova, F;
2001

Abstract

A measurement of the FV 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- --> l (v) over bar (l)q (q) over bar ' and W+W- --> q (q) over bar '(q) over barq ' channels. The W mass result for the 1998 data set is M-W = 80.387 +/- 0.087(stat) +/- 0.034(syst) +/- 0.017(LEP) +/- 0.035(FSI) GeV/c(2), where FSI represents the uncertainty due to final state interaction effects in the q (q) over bar 'q (q) over bar ' channel, and LEP represents that arising from the knowledge of the beam energy of the accelerator Combining this result with Ghost: previously published by the DELPHI Collaboration gives the result M-W = 80.359 +/- 0.074(stat) +/- 0.032(syst) +/- 0.017(LEP) +/- 0.033(FSI) GeV/c(2). The combined value for the W width is Gamma (W) = 2.266 +/- 0.176(stat) +/- 0.056(syst) +/- 0.052(FSI) GeV/c(2). (C) 2001 Elsevier Science B.V. All rights reserved
Articolo in rivista - Articolo scientifico
LEP
English
2001
511
2-4
159
177
none
Abreu, P., Adam, W., Adye, T., Adzic, P., Albrecht, Z., Alderweireld, T., et al. (2001). Measurement of the mass and width of the W boson in e+e- collisions at √s = 189 GeV. PHYSICS LETTERS. SECTION B, 511(2-4), 159-177 [10.1016/S0370-2693(01)00453-1].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/188000
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