Momentum Transfer Dependence of the Differential Cross Section for $J/ψ$ Production

Details Momentum Transfer Dependence of the Differential Cross Section for $J/ψ$ Production Momentum Transfer Dependence of the Differential Cross Section for $J/ψ$ Production

2001-10-18

arxiv.org/abs/hep-ph/0110256v3

Phys.Lett. B532 (2002) 37-47

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version

Scientific paper

10.1016/S0370-2693(02)01542-3

We discuss the $t$ dependence of $J/\psi$ production in the region of $0< -t < M^2_{\psi}$. The forward slope of the elastic differential cross section is calculated assuming a dipole-type dependence for the gluon ladder-proton form factor. The $t$ dependence of $d\sigma/dt$ is obtained using DGLAP evolution both for the elastic channel at low $-t$ and for the inelastic channel at large values of $-t$, up to $-t\simeq M^2_{\psi}$. Results are presented and compared with the relevant experimental data.

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