2018 Impact factor 4.843
Particles and Fields

Eur. Phys. J. C 19, 709-713
DOI: 10.1007/s100520100626

The photon structure and exclusive production of vector mesons in $\gamma\gamma$ collisions

L. Motyka1, 2 and B. Ziaja2, 3

1  High Energy Physics, Uppsala University, Uppsala, Sweden
2  Institute of Physics, Jagellonian University, Cracow, Poland
3  Department of Theoretical Physics, H. Niewodniczanski Institute of Nuclear Physics, Cracow, Poland

(Received: 13 December 2000 / Revised version: 6 January 2001/ Published online: 6 April 2001 -© Springer-Verlag 2001)

The process of exclusive vector meson production, $\gamma\gamma \to
J/\psi \rho^0$, is studied for almost real photons. This process may be reduced to the photoproduction of $J/\psi$ off the $\rho^0$ meson. We discuss the possibility of extracting the gluon distribution of $\rho^0$ and of the photon from such a measurement. Predictions are also given for the reaction $e^+ e^- \to e^+ e^- J/\psi \rho^0$ for various e+e- cms energies typical for LEP and for the future linear colliders.

© Società Italiana di Fisica, Springer-Verlag 2001