Survival of charmonia in a hot environment

Abstract

A colorless c-cbar dipole emerging from a heavy ion collision and developing the charmonium wave function can be broken-up by final state interactions (FSI) propagating through the hot medium created in the collision. We single out two mechanisms of charmonium attenuation: (i) Debye color screening, called melting; and (ii) color-exchange interaction with the medium, called absorption. The former problem has been treated so far only for charmonia at rest embedded in the medium, while in practice their transverse momenta at the LHC are quite high, <p_T^2>=7-10 GeV^2. We demonstrate that a c-cbar dipole may have a large survival probability even at infinitely high temperature. We develop a procedure of Lorentz boosting of the Schroedinger equation to a moving reference frame and perform the first realistic calculations of the charmonium survival probability employing the path-integral technique, incorporating both melting and absorption. These effects are found to have comparable magnitudes. We also calculated the FSI suppression factor for the radial excitation psi(2S) and found it to be stronger than for J/psi, except large p_T, where psi(2S) is relatively enhanced. The azimuthal asymmetry parameter v_2 is also calculated.

arXiv comment12 pages, 9 figures, references added

References in corpus (48)

• Glauber Modeling in High Energy Nuclear Collisions
• Radiative energy loss and $p_{\perp }$-broadening of high energy partons in nuclei
• Real-time static potential in hot QCD
• Induced Gluon Radiation in a QCD Medium
• Sequential charmonium dissociation
• Nonperturbative Effects in Gluon Radiation and Photoproduction of Quark Pairs
• Bremsstrahlung of a Quark Propagating through a Nucleus
• Thermal width and gluo-dissociation of quarkonium in pNRQCD
• Coherence Phenomena in Charmonium Production off Nuclei at the Energies of RHIC and LHC
• Inclusive J/psi production in pp collisions at sqrt(s) = 2.76 TeV
• Novel Color Transparency Effect: Scanning the Wave Function of Vector Mesons
• Photoproduction of Charmonia and Total Charmonium-Proton Cross Sections
• Bulk matter evolution and extraction of jet transport parameter in heavy-ion collisions at RHIC
• Effective confining potentials for QCD
• Broadening of Transverse Momentum of Partons Propagating through a Medium
• Heavy quark free energies and the renormalized Polyakov loop in full QCD
• Heavy Quarkonium moving in a Quark-Gluon Plasma
• Non-relativistic bound states in a moving thermal bath
• Azimuthal Asymmetry of pions in pp and pA collisions
• Quenching of high-pT hadrons: Energy Loss vs Color Transparency
• Electroproduction of Charmonia off Nuclei
• Nuclear suppression of J/Psi: from RHIC to the LHC
• Inelastic $J/\Psi$ Photoproduction off Nuclei: Gluon Enhancement or Double Color Exchange?
• Measuring the saturation scale in nuclei
• On static quark anti-quark potential at non-zero temperature
• Heavy quarkonium production: Nontrivial transition from pA to AA collisions
• J/Psi production in nuclear collisions: measuring the transport coefficient
• Mutual boosting of the saturation scales in colliding nuclei
• Puzzles of J/Psi production off nuclei
• Static quark correlators and quarkonium properties at non-zero temperature
• Heavy Mesons and Impact Ionization of Heavy Quarkonia
• Color transparency and suppression of high-pT hadrons in nuclear collisions
• Exclusive Nonleptonic B Decays from QCD Light-Cone Sum Rules
• Deep inelastic J/Psi production at HERA in the colour singlet model with k_T-factorization
• An Introduction to 5-Dimensional Extensions of the Standard Model
• Heavy Quarks on the Lattice
• Exclusive rare decays of B and B_c mesons in a relativistic quark model
• B Physics and CP Violation
• Extraction of the strong coupling constant and strange quark mass from semileptonic tau decays
• The Structure Functions F_2^c, F_L and F_L^c in the Framework of the k_T Factorization
• Unifying aspects of light- and heavy-systems
• Heavy flavor production off protons and in a nuclear environment
• One-loop corrections to polarization observables
• Vacuum Expectation Value of a Wegner-Wilson Loop near the Light Cone
• An Approach towards a Constituent Quark Model on the Light Cone
• Quantum mechanical model for J/psi suppression in the LHC era
• Quarkonia and QGP studies
• Charmonium in a hot medium: melting vs absorption

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