The most important results of the L3 experiment, as is known, are as follows.
Z-boson mass has been determined with high precision, the probability of the decay Z®
  has been determined, and the number of generation of massless neutrino has been determined (Nn
=2.978±
0.014), the Standard Model (SM) predictions have been confirmed, and Weinberg angle has been estimated with high accuracy, the top-quark mass has been predicted in the frame of SM from higher order weak radiative corrections. In the recent years, main effort of the L3 activity were largely focused on the search for Higgs bosons and precise measurements of the properties of the W boson. Detailed studies of resonance formation in two-photon interactions were continued. By present, the L3 experiment has been completed, however the analysis of the data obtained has not been finished. The PNPI group continues the study of exclusive multi-hadronic final states in two-photon interactions, especially with high masses. Resonances with hidden charm and beauty quarks are also under search.
(See also Historical overview of main activities and L3).
(For more detail review see article "Recent Results of the L3 Collaboration (CERN)" in PNPI HEPD Report "Main Scientific Activities 1997-2001").
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