Measurement of Triple Gauge-Boson Couplings in Aleph

Details Measurement of Triple Gauge-Boson Couplings in Aleph Measurement of Triple Gauge-Boson Couplings in Aleph

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003fuin.conf..169b&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the Seventeenth Lake Louise Winter Institute. Held 17-23 February 2002 in Lake Louise,

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Scientific paper

The triple gauge-boson couplings involving the W are determined using data samples collected with the ALEPH detector at mean centre-of-mass energies between 183 GeV and 208 GeV, corresponding to an integrated luminosity of 683.6 pb-1. The triple gauge-boson couplings, Δ g1Z , Δκγ and λγ are measured using an optimal observable analysis of W-pair event topology. Results from single-W and single-γ production are included. The three couplings are measured individually assuming the two other couplings to be fixed at zero (Standard Model value). In addition, we use W-pair events to set limits on the C- and P-violating couplings g4V , g5V , {˜ κ }}V and ˜ λ V , where V denotes either γ or Z. No deviations from the Standard Model expectations are observed.

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