On $γγ^*$ production of two $ρ^0$ mesons

Details On $γγ^*$ production of two $ρ^0$ mesons On $γγ^*$ production of two $ρ^0$ mesons

2003-07-04

arxiv.org/abs/hep-ph/0307059v2

Phys.Rev. D69 (2004) 014018

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 3 figures. Revised version

Scientific paper

10.1103/PhysRevD.69.014018

We present a theoretical estimation for the cross-section of exclusive two $\rho$-meson production in two photon collision when one of the initial photons is highly virtual. The compatibility of our analysis with recent experimental data obtained by the L3 Collaboration at LEP is discussed. We show that these data prove the scaling behavior of the exclusive production amplitude. They are thus consistent with a partonic description of the exclusive process $\gamma\gamma ^*\to\rho ^0\rho ^0$ when $Q^2\sim 2 - 20 {\rm GeV^2}$.

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