Coherent photo-produced J$/\psi$ and dielectron yields in isobaric collisions

Abstract

Recently, significant enhancements of J/$\psi$ and $e^{+}{e}^{-}$ pair production at very low transverse momenta were observed by the STAR and ALICE collaboration in peripheral hadronic A+A collisions. The anomaly excesses point to evidence of coherent photon-nucleus and photon-photon interactions in violent hadronic heavy-ion collisions, which were conventionally studied only in ultra-peripheral collisions. The isobaric collisions performed at RHIC provides a unique opportunity to test the existence of coherent photon products in hadronic heavy-ion collisions. The idea is that the possible production of coherent photon products is significantly different in different collision systems due to the variations in their charge and nuclear density distributions. In this letter, we focus on the peripheral collisions and provide theoretical predictions for coherent production of J/$\psi$ and dielectron in isobaric collisions. We show that the expected yields differ significantly to perform the experimental test.

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Cited by in corpus (12)

• Properties of the QCD Matter -- An Experimental Review of Selected Results from RHIC BES Program
• An experimental review of open heavy flavor and quarkonium production at RHIC
• Exclusive dilepton production in ultraperipheral $PbPb$ collisions at the LHC
• Bottom energy loss and non-prompt $J/\psi$ production in relativistic heavy ion collisions
• Ultraperipheral nuclear interactions
• Quantum color screening in external magnetic field
• Regge phenomenology and coherent photoproduction of charmonium in peripheral heavy ion collisions
• The effect of initial nuclear deformation on dielectron photoproduction in hadronic heavy-ion collisions
• Dilepton photoproduction measures the fluctuations of initial electromagnetic fields in nuclear collisions
• Thresholds of ultraperipheral processes
• Excess of soft dielectrons and photons
• Charmonium in electromagnetic and vortical fields