Predictions for squeezed correlations of boson-antiboson pairs in high-energy heavy-ion collisions by event-by-event hydrodynamics

Yong Zhang, Wei-Ning Zhang

Published 2015-09-06Version 1

We calculate the squeezed back-to-back correlation (BBC) functions of $\phi\phi$ and $K^+K^-$ for the heavy-ion collisions of Au+Au at $\sqrt{s_{NN}}=200$ GeV/$c$ at the RHIC and Pb+Pb at $\sqrt{s_{NN}} =2.76$ TeV/$c$ at the LHC, using the source distributions generated by ($2+1$)-dimensional hydrodynamics with fluctuating initial conditions. The BBC functions averaged over event-by-event calculations for the hydrodynamic sources are smoothed as a function of the particle momentum. For the heavy-ion collisions at the RHIC energy, the BBC functions are stronger than those for the collisions at the LHC energy. The BBC functions of $\phi\phi$ are possible be observed in the periphery collisions at the RHIC and LHC energies.