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Measurement and interpretation of the W pair cross-section in e+e− interactions at 161-GeV

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Abreu, P. [--] Cortina Gil, Eduardo [UCL] DELPHI Collaboration [--]

In 1996 LEP ran at a centre-of-mass energy of 161 GeV, just above the threshold of W-pair production. DELPHI accumulated data corresponding to an integrated luminosity of 9.93 pb−1, and observed 29 events that are considered as candidates for W-pair production. From these, a cross-section for the doubly resonant e+e− → WW process of 3.67−0.85+0.97 ± 0.19 pb has been measured. Within the Standard Model, this cross-section corresponds to a mass of the W-boson of 80.40 ± 0.44 (stat.) ± 0.09 (syst.) ± 0.03 (LEP) GeV/c2. Alternatively, if mW is held fixed at its current value determined by other experiments, the observed cross-section is used to obtain limits on trilinear WWV (V ≡ γ, Z) couplings.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 1997
Language Anglais
Journal information "Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics" - Vol. 397, no.1-2, p. 158-170 (1997)
Peer reviewed yes
Publisher Elsevier BV * North-Holland ((Netherlands) Amsterdam)
issn 0370-2693
e-issn 1873-2445
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Links
Bibliographic reference Abreu, P. ; Cortina Gil, Eduardo ; DELPHI Collaboration ; et. al. Measurement and interpretation of the W pair cross-section in e+e− interactions at 161-GeV . In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 397, no.1-2, p. 158-170 (1997)
Permanent URL http://hdl.handle.net/2078.1/123572