Abstract: The final
results of the ALEPH search for the Standard Model Higgs boson at LEP, with
data collected in the year 2000 at centre-of-mass energies up to 209 GeV,
are presented. The changes with respect to the preceding publication are
described and a complete study of systematic effects is reported. The
findings of this final analysis confirm the preliminary results published in
November 2000 shortly after the closing down of the LEP collider: a
significant excess of events is observed, consistent with the production of
a 115 GeV/c2 Standard Model Higgs boson. The final results of the searches
for the neutral Higgs bosons of the MSSM are also reported, in terms of
limits on mh, mA and tan b. Limits are also set on
mh in the case of
invisible decays. |