Incoherent diffractive photoproduction of $J/\psi$ and ${\rm Y}$ on heavy nuclei in the color dipole approach

Abstract

We calculate cross sections and transverse momentum distributions for the incoherent diffractive production of vector mesons $J/\psi$ and ${\rm Y}$ on heavy nuclei. In distinction to coherent diffraction, the nucleus is allowed to break up, but except for the vector meson no new particles are produced in the reaction. Within the color dipole approach, we derive the multiple scattering expansion of the incoherent diffractive cross section as an expansion over quasielastic scatterings of the color dipole. We also compare our results to the measurement of the ALICE collaboration for incoherent $J/\psi$ production at $\sqrt{s_{\mathrm{NN}}}=2.76\mathrm{TeV}$ and show predictions at $\sqrt{s_{\mathrm{NN}}}=5.02\mathrm{TeV}$. We also briefly discuss a possible contribution to $J/\psi$ production in peripheral collisions in the $70÷90\%$ centrality class.

18 pages, 8 figs

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• Diffractive deeply inelastic scattering in future electron-ion colliders
• Exclusive photoproduction of excited quarkonia in ultraperipheral collisions
• First measurement of the $|t|$-dependence of incoherent J/$\psi$ photonuclear production
• Exclusive vector meson production in electron-ion collisions at the EIC, LHeC and FCC-$eh$
• Coherent and incoherent $J/\Psi$ photoproduction in $PbPb$ collisions at the LHC, HE -- LHC and FCC
• Exclusive processes in $ep$ collisions at the EIC and LHeC: A closer look on the predictions of saturation models
• Coherent and incoherent production of vector mesons in ultraperipheral collisions of Xenon-ions within the QCD parton saturation approach