Exclusive vector meson photoproduction with a leading baryon in photon - hadron interactions at hadronic colliders

摘要

Exclusive vector meson photoproduction associated with a leading baryon ($B =n, \Delta^+, \Delta^0$) in $pp$ and $pA$ collisions at RHIC and LHC energies isinvestigated using the color dipole formalism and taking into account nonlineareffects in the QCD dynamics. In particular, we compute the cross sections for$\rho$, $\phi$ and $J/\Psi$ production together with a $\Delta$ and compare thepredictions with those obtained for a leading neutron. Our results show thatthe $V + \Delta$ cross section is almost 30 % of the $V + n$ one. Our resultsalso show that a future experimental analysis of these processes is, inprinciple, feasible and can be useful to study leading particle production.