Search for Technicolor with DELPHI

Technicolor represents a viable alternative to the Higgs mechanism for generating gauge boson masses. Searches for technicolor particles T and T have been per- formed in the data collected by the DELPHI experiment at LEP at centre-of-mass energies between 192 and 208 GeV corresponding to a total luminosity of 452 pb 1 . Good agreement is observed with the SM expectation in all channels studied. This is translated into an excluded region in the (M T ; M T ) plane. The T production is excluded for all 90 < M T < 206:7 GeV/c 2 . Assuming a point-like interaction of the T with gauge bosons, an absolute lower limit on the charged T mass at 95% CL is set at 79.8 GeV/c 2 , independently of other parameters of the technicolor model.