Study of the colour singlet model with k T -factorization in inclusive J/ production at CERN LEP2

-factorization approach, including both direct and resolved photon contributions. Theunintegrated gluon distribution in the photon is determined, using the Blu¨mlein’s prescrip-tion for unintegrated gluon distribution in a proton. We compare our theoretical predictionswith preliminary data taken by the DELPHI collaboration at LEP2. In addition, we presentour predictions for the J/ψpolarization properties.

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