Study of the colour singlet model with k_T-factorization in inclusive J/ψproduction at CERN LEP2

Details Study of the colour singlet model with k_T-factorization in inclusive J/ψproduction at CERN LEP2 Study of the colour singlet model with k_T-factorization in inclusive J/ψproduction at CERN LEP2

2003-04-18

arxiv.org/abs/hep-ph/0304181v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 6 figures

Scientific paper

We calculate the cross section and the transverse momentum distribution of inclusive J/\psi production in \gamma \gamma collisions at CERN LEP2 within the colour singlet model and the k_T-factorization approach, including both direct and resolved photon contributions. The unintegrated gluon distribution in the photon is determined, using the Blumlein's prescription for unintegrated gluon distribution in a proton. We compare our theoretical predictions with preliminary data taken by the DELPHI collaboration at LEP2. In addition, we present our predictions for the J/\psi polarization properties.

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