Double vector meson production from the BFKL equation

Details Double vector meson production from the BFKL equation Double vector meson production from the BFKL equation

2005-06-17

arxiv.org/abs/hep-ph/0506178v2

Eur.Phys.J.C44:515-522,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 3 tables, 7 figures. Minor changes. Accepted for publication in Eur. Phys. J. C

Scientific paper

10.1140/epjc/s2005-02392-8

The double vector meson production in two photon collisions is addressed assuming that the color singlet $t$-channel exchange carries large momentum transfer. We consider the non-forward solution of the BFKL equation at high energy and large momentum transfer and estimate the total and differential cross section for the process $\gamma \gamma \to V_1 V_2$, where $V_1$ and $V_2$ can be any two vector mesons ($V_i = \rho, \omega, \phi, J/\Psi, \Upsilon$). A comparison between our predictions and previous theoretical results obtained at Born level or assuming the Pomeron-exchange factorization relations is presented. Our results demonstrate that the BFKL dynamics implies an enhancement of the cross sections. Predictions for the future linear colliders (TESLA, CLIC and ILC) are given.

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