Predictions for squeezed back-to-back correlations of $\varphi \varphi$ and $K^{+}{K}^{-}$ in high-energy heavy-ion collisions by event-by-event hydrodynamics

Abstract

We calculate the squeezed back-to-back correlation (BBC) functions of $\varphi \varphi$ and $K^{+}{K}^{-}$ for heavy-ion collisions at RHIC and LHC energies, using ($2+1$)-dimensional hydrodynamics with fluctuating initial conditions. The BBC functions averaged over event-by-event calculations for many events for the hydrodynamic sources are smoothed as a function of the particle momentum. For heavy-ion collisions of Au+Au at $\sqrt{s_{NN}}=200$ GeV, the BBC functions are larger than those for collisions of Pb+Pb at $\sqrt{s_{NN}}=2.76$ TeV. The BBC of $\varphi \varphi$ may possibly be observed in peripheral collisions at the RHIC and LHC energies. It is large for the smaller sources of Cu+Cu collisions at $\sqrt{s_{NN}}=200$ GeV.

16 pages, 11 figures

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Cited by in corpus (5)

• Squeezed back-to-back correlation between bosons and antibosons with different in-medium masses in high-energy heavy-ion collisions
• Squeezed back-to-back correlation of $\bqD^0{\bar \bqD}^0$ in relativistic heavy-ion collisions
• Effect of in-medium mass-shift on transverse-momentum spectrum and elliptic anisotropy of $\varphi$ meson
• Squeezed back-to-back correlations of bosons with nonzero widths in relativistic heavy-ion collisions
• Squeezed back-to-back correlations of $K^{+}$$K^{-}$ in d+Au collisions at $\sqrt{s_{NN}}=200$ GeV and Au+Au collisions at $\sqrt{s_{NN}}=62.4$ GeV