Particle emission following Coulomb excitation in ultrarelativistic heavy-ion collisions

Abstract

We study nuclear reactions induced by virtual photons associated with Lorentz-boosted Coulomb fields of ultrarelativistic heavy ions. Evaporation, fission and multifragmentation mechanisms are included in a new RELDIS code, which describes the deexcitation of residual nuclei formed after single and double photon absorption in peripheral heavy-ion collisions. Partial cross sections for different dissociation channels, including the multiple neutron emission ones, are calculated and compared with data when available. Rapidity and transverse momentum distributions of nucleons, nuclear fragments and pions, produced electromagnetically, are also calculated. These results provide important information for designing large-rapidity detectors and zero-degree calorimeters at RHIC and LHC. The electromagnetic dissociation of nuclei imposes some constrains on the investigation of exotic particle production in gamma-gamma fusion reactions.

26 LaTeX pages including 8 figures, uses epsf.sty

References in corpus (5)

• Photon-Photon Physics in Very Peripheral Collisions of Relativistic Heavy Ions
• Correlated forward-backward dissociation and neutron spectra as a luminosity monitor in heavy ion colliders
• Nuclear multifragmentation induced by electromagnetic fields of ultrarelativistic heavy ions
• Heavy ion beam lifetimes at relativistic and ultrarelativistic colliders
• Dilepton production by bremsstrahlung of meson fields in nuclear collisions

Cited by in corpus (16)

• Physics of Ultra-Peripheral Nuclear Collisions
• Measurement of the cross section for electromagnetic dissociation with neutron emission in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Mutual heavy ion dissociation in peripheral collisions at ultrarelativistic energies
• First measurement of the $|\text{t}|$-dependence of coherent $J/\psi$ photonuclear production
• Mapping the Electromagnetic Fields of Heavy-Ion Collisions with the Breit-Wheeler Process
• Energy dependence of coherent photonuclear production of J/$\psi$ mesons in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=5.02 TeV
• Coherent photoproduction of ${\rho }^0$ vector mesons in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Production of QED pairs at small impact parameter in relativistic heavy ion collisions
• First measurement of coherent ${\rho }^0$ photoproduction in ultra-peripheral Xe-Xe collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}=5.44$ TeV
• Evaluation of the total photoabsorption cross sections for actinides from photofission data and model calculations
• Neutron emission in ultraperipheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Inclusive meson production in peripheral collisions of ultrarelativistic heavy ions
• Proton emission in ultraperipheral Pb-Pb collisions at $\sqrt{{\text{s}}_{\text{NN}}}=5.02$ TeV
• Measurement of the electromagnetic dissociation cross section of Pb nuclei at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb
• Impact of new results from the ultraperipheral collision on modeling the proton and neutron emission in photon-induced nuclear processes