Abstract
The OPERA experiment is located in the Gran Sasso underground laboratory and designed to directly detect the appearance of ντ in a pure νμ beam by observing the decay of charged τ leptons produced in ντ charged current interactions. The OPERA detector is a hybrid detector, containing electronic detectors (ED) and high resolution nuclear emulsions. A short introduction to the detector is presented. The analysis procedures will be described, including the analysis flow chain and the vertex decay search procedure. First results will be presented, including the main kinematic measurements obtained until now and the cross checks made on the background expectation.
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