Medium modifications of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ρ</mml:mi></mml:mrow></mml:math>meson in nuclear photoproduction

Riek, F.; Rapp, Ralf; Oh, Yongseok; Lee, T. S H.

doi:10.1103/physrevc.82.015202

Cited by 81 publications

(245 citation statements)

References 40 publications

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“…In the QGP, HQ interactions with surrounding quarks, anti-quarks and gluons are evaluated using in-medium Tmatrices [35,37], which are obtained in different partialwave (l = S, P ) and color channels (e.g., a = 1, 8 for Qq) from a Lippmann-Schwinger equation…”

Section: A Transport Coefficients and Bulk Mediummentioning

confidence: 99%

“…Specifically, we calculate the R AA and elliptic flow (v 2 ) of HF electrons and compare the results to recent PHENIX and STAR data. Since our nonperturbative HF diffusion approach is characterized by a maximal interaction strength in the pseudo-critical region [35,36], its application at lower energies can help to test the validity of this behavior.…”

Section: Introductionmentioning

confidence: 99%

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Modifications of heavy-flavor spectra insNN=62.4GeV Au-Au collisions

Fries

Rapp

2015

Phys. Rev. C

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We calculate open heavy-flavor (HF) production in Au+Au collisions at √ sNN=62.4 GeV utilizing a nonperturbative transport approach as previously applied in nuclear collisions at top RHIC and LHC energies. The effects of hot QCD matter are treated in a strong-coupling framework, by implementing heavy-quark diffusion, hadronization and heavy-flavor meson diffusion within a hydrodynamic background evolution. Since in our approach the heavy-flavor coupling to the medium is strongest in the pseudo-critical region (including the effects of resonance recombination), it is of interest to test its consequences at lower collision energies where the sensitivity to this region should be enhanced relative to the initially hotter fireball temperatures reached at top RHIC and LHC energies. We find that the suppression and flow pattern of the non-photonic electrons from heavyflavor decays at 62.4 GeV emerges from an intricate interplay of thermalization and initial-state effects, in particular a Cronin enhancement which is known to become more pronounced toward lower collision energies.

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Section: A Transport Coefficients and Bulk Mediummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modifications of heavy-flavor spectra insNN=62.4GeV Au-Au collisions

Fries

Rapp

2015

Phys. Rev. C

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“…For the HQ friction coefficient, we extend previous T -matrix calculations carried out for the free and internal energies as potential proxies [4,13,25]. In particular, due to the large widths in the SCS we account for off-shell effects based on the formalism described in Ref.…”

Section: Transport Properties Of Qgpmentioning

confidence: 99%

“…The sum is over momentum, spin, color, and particle species (3 light-quark flavors, gluons, charm and bottom quarks). Summing up the ladder diagrams generated from this Hamiltonian, we obtain the T -matrix equation [12][13][14],…”

Section: T -Matrix Approachmentioning

confidence: 99%

Non-perturbative Approach to Equation of State and Collective Modes of the QGP

Liu

Rappxs

2018

EPJ Web of Conferences

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Abstract. We discuss a non-perturbative T -matrix approach to investigate the microscopic structure of the quark-gluon plasma (QGP). Utilizing an effective Hamiltonian which includes both light-and heavy-parton degrees of freedoms. The basic two-body interaction includes color-Coulomb and confining contributions in all available color channels, and is constrained by lattice-QCD data for the heavy-quark free energy. The in-medium T -matrices and parton spectral functions are computed selfconsistently with full account of off-shell properties encoded in large scattering widths. We apply the Tmatrices to calculate the equation of state (EoS) for the QGP, including a ladder resummation of the Luttinger-Ward functional using a matrix-log technique to account for the dynamical formation of bound states. It turns out that the latter become the dominant degrees of freedom in the EoS at low QGP temperatures indicating a transition from parton to hadron degrees of freedom. The calculated spectral properties of one-and two-body states confirm this picture, where large parton scattering rates dissolve the parton quasiparticle structures while broad resonances start to form as the pseudocritical temperature is approached from above. Further calculations of transport coefficients reveal a small viscosity and heavy-quark diffusion coefficient.

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“…The description of quarkonia states in a hot QGP medium in the vicinity of the critical temperature should therefore treat bound and scattering states on an equal footing. This is appropriately achieved within a thermodynamical Tmatrix approach, which has been developed to address the spectral properties of quarkonia [23] as well as open flavor meson states [24,25,26]. It is also worth noting that inelastic collisions are responsible for absorption of J/ψ in a hadron gas of light π and ρ mesons since the corresponding cross sections can be sufficienly large [21,27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

Quantum mechanical model for J/ψ suppression in the LHC era

Peña

Blaschke

2014

Nuclear Physics A

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We discuss the interplay of screening, absorption and regeneration effects, on the quantum mechanical evolution of quarkonia states, within a time-dependent harmonic oscillator (THO) model with complex oscillator strength. We compare the results with data for R AA /R AA (CNM) from CERN and RHIC experiments. In the absence of a measurement of cold nuclear matter (CNM) effects at LHC we estimate their role and interpret the recent data from the ALICE experiment. We also discuss the temperature dependence of the real and imaginary parts of the oscillator frequency which stand for screening and absorption/regeneration, respectively. We point out that a structure in the J/ψ suppression pattern for In-In collisions at SPS is possibly related to the recently found X(3872) state in the charmonium spectrum. Theoretical support for this hypothesis comes from the cluster expansion of the plasma Hamiltonian for heavy quarkonia in a strongly correlated medium.

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Medium modifications of theρmeson in nuclear photoproduction

Cited by 81 publications

References 40 publications

Modifications of heavy-flavor spectra insNN=62.4GeV Au-Au collisions

Modifications of heavy-flavor spectra insNN=62.4GeV Au-Au collisions

Non-perturbative Approach to Equation of State and Collective Modes of the QGP

Quantum mechanical model for J/ψ suppression in the LHC era

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