Diffractive photoproduction of Z^0 bosons in coherent interactions at CERN-LHC

Abstract

The exclusive $Z^0$ photoproduction at high energies in $\gamma p(A)$, $pp$ and $AA$ collisions is investigate within the color dipole formalism. We generalize the description of the deeply virtual compton scattering (DVCS) process, which describe quite well the HERA data, for the production of $Z^0$ bosons and estimate the total cross section for the exclusive process ${\gamma }^{\ast }h\to Z^{0}h$ ($h=p,A$) for different energies, photon virtualities and atomic numbers. As hadrons at collider energies are a source of Weizsäcker - Williams photons, we consider electromagnetic interactions in hadron-hadron collisions at Tevatron and LHC energies and estimate the rapidity distribution and total cross section for $Z^0$ production in the $hh\to h{Z}^{0}h$ process. This is the first estimation for such a process in literature. It can allow us to study, for instance, the physics of hadronic $Z^0$ decays in a clean environment characterized by two rapidity gaps. Our results indicate that the experimental analyzes of this process could be feasible in $pp$ but the physics scenario for $AA$ collisions is not promising.

6 pages, 2 figures, 1 table; The erroneus additional factor of $2\pi$ in the normalization of the cross sections is removed. Figures and table are updated

References in corpus (5)

• Electron-Positron Pair Production in Relativistic Heavy Ion Collisions
• Exclusive vector meson production at HERA from QCD with saturation
• Further success of the colour dipole model
• Quarkonium production in coherent hadron-hadron interactions at the LHC
• Diffractive photoproduction of heavy quarks in hadronic collisions

Cited by in corpus (8)

• Central Exclusive Particle Production at High Energy Hadron Colliders
• Study of exclusive two-photon production of W(+)W(-) in pp collisions at sqrt(s) = 7 TeV and constraints on anomalous quartic gauge couplings
• $Z$ boson production in Pb+Pb collisions at $\sqrt{s_{\text{NN}}}$= 5.02 TeV measured by the ATLAS experiment
• Probing the Odderon in coherent hadron - hadron interactions at CERN LHC
• Exclusive diffractive photoproduction of dileptons by timelike Compton scattering
• Dilepton production through timelike Compton scattering within the $k_T$-factorization approach
• Exclusive $Z^0$ production in $ep$ and $eA$ collisions at high energies
• Probing Saturation Physics in the Real Compton Scattering at Ultraperipheral $pPb$ Collisions