Coherent J/$\psi$ photoproduction in hadronic heavy-ion collisions

Abstract

A significant excess of J/$\psi$ yield at very low transverse momentum ($p_T<0.3$ GeV/c) was observed by the ALICE and STAR collaborations in peripheral A+A collisions, which points to evidence of coherent photoproduction of J/$\psi$ in violent hadronic interactions. Theoretically, the photoproduction of J$/\psi$ in hadronic collisions raises questions about how spectator and non-spectator nucleons participate in the coherent reaction. For the first time, we argue that the strong interactions in the overlapping region of incoming nuclei may disturb the coherent production, leaving room for different coupling assumptions. Furthermore, first considerations of the destructive interference between photoproduction on ions moving in opposite directions in hadronic heavy-ion collisions are included. This letter presents calculations of J$/\psi$ production from coherent photon-nucleus ($\gamma +A\to \text{J}/\psi +A$) interactions in hadronic A+A collisions at RHIC and LHC energies with both nucleus and spectator coupling hypotheses. The coherent J/$\psi$ yield as a function of centrality and differential distributions as a function of transverse momentum, azimuthal angle and rapidity in different centrality bins are shown and found to be significantly different for different coupling scenarios, calling for future experimental measurements.

References in corpus (4)

• Glauber Modeling in High Energy Nuclear Collisions
• Energy dependence of J/psi absorption in proton-nucleus collisions
• Observation of Two-source Interference in the Photoproduction Reaction $AuAu\to AuAu{\rho }^0$
• Ultra-peripheral collisions and hadronic structure

Cited by in corpus (28)

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• First measurement of the $|\text{t}|$-dependence of coherent $J/\psi$ photonuclear production
• The Present and Future of QCD
• An experimental review of open heavy flavor and quarkonium production at RHIC
• Mapping the Electromagnetic Fields of Heavy-Ion Collisions with the Breit-Wheeler Process
• Two-photon production of dilepton pairs in peripheral heavy ion collisions
• Observation of excess J/$\psi$ yield at very low transverse momenta in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=$ 200 GeV and U+U collisions at $\sqrt{s_{\mathrm{NN}}}=$ 193 GeV
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• Exploring the double-slit interference with linearly polarized photons
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• $J/\psi$ photo-production in Pb-Pb peripheral collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5 TeV
• Heavy Mesons Photoproduction in Peripheral AA Collisions
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• Challenges to the Good-Walker paradigm in coherent and incoherent photoproduction
• Coherent and incoherent $J/\Psi$ photoproduction in $PbPb$ collisions at the LHC, HE -- LHC and FCC
• Exclusive J/$\psi$ Detection and Physics with ECCE
• Photoproduction of J/$\psi$ in non-single-diffractive p+p collisions
• 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
• Probing Quantum Phenomena through Photoproduction in Relativistic Heavy-Ion Collisions
• Coherent J/$\psi$ photoproduction at midrapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Measurement of inclusive $J/\psi$ production in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=54.4$ GeV at STAR
• Rescattering effects on spin-interference for ${\rho }^0$ photoproduction in heavy-ion collisions
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