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Charm quarks in medium and their contribution to di-electron spectra in relativistic heavy ion collisions
Nuclear Theory · Submitted 31 May 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim This means that the angular correlation is intact even with medium interaction at the RHIC energy.
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The abstract, sentence by sentence
We study the dynamics of charm quarks in the partonic medium and its implication to the di-electron spectra in high energy heavy ion collisions. The charm quarks traversing a thermal medium is simulated by the relativistic Langevin equation for elastic scatterings of charm quarks by thermal partons in an expanding fireball. The transport coefficients of charm quarks are calculated by the in-medium T-matrix method, where a static heavy quark potential is used with parameters fitted by the lattice QCD results. The di-electron invariant mass spectra are computed in most central collisions and are compared to the STAR data. The angular correlations of di-electrons are almost the same in $p+p$ and Au+Au collisions in the mass range $1.1<M<2.5~\mathrm{GeV/c^2}$ with the back-to-back feature. This means that the angular correlation is intact even with medium interaction at the RHIC energy.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We study the dynamics of charm quarks in the partonic medium and its implication to the di-electron spectra in high energy heavy ion collisions. | contribution 0.98 | 0.85 | 0.06 | asserted 0.54 |
| s1 | The charm quarks traversing a thermal medium is simulated by the relativistic Langevin equation for elastic scatterings of charm quarks by thermal partons in an expanding fireball. | method 1.00 | 0.85 | 0.03 | asserted 1.00 |
| s2 | The transport coefficients of charm quarks are calculated by the in-medium T-matrix method, where a static heavy quark potential is used with parameters fitted by the lattice QCD results. | method 1.00 | 0.85 | 0.03 | asserted 1.00 |
| s3 | The di-electron invariant mass spectra are computed in most central collisions and are compared to the STAR data. | method 0.54 | 0.94 | 0.06 | asserted 0.99 |
| s4 | The angular correlations of di-electrons are almost the same in $p+p$ and Au+Au collisions in the mass range $1.1<M<2.5~\mathrm{GeV/c^2}$ with the back-to-back feature. | result 1.00 | 0.83 | 0.27 | asserted 0.99 |
| s5 | This means that the angular correlation is intact even with medium interaction at the RHIC energy. | interpretation 1.00 | 0.75 | 0.44 | asserted 0.95 |
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The paper
Original abstract
We study the dynamics of charm quarks in the partonic medium and its implication to the di-electron spectra in high energy heavy ion collisions. The charm quarks traversing a thermal medium is simulated by the relativistic Langevin equation for elastic scatterings of charm quarks by thermal partons in an expanding fireball. The transport coefficients of charm quarks are calculated by the in-medium T-matrix method, where a static heavy quark potential is used with parameters fitted by the lattice QCD results. The di-electron invariant mass spectra are computed in most central collisions and are compared to the STAR data. The angular correlations of di-electrons are almost the same in $p+p$ and Au+Au collisions in the mass range $1.1<M<2.5~\mathrm{GeV/c^2}$ with the back-to-back feature. This means that the angular correlation is intact even with medium interaction at the RHIC energy.
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References
How the literature uses it
6 arXiv papers cite this in 6 sentences
Papers citing it · 3 sentences without a confident label
Cites it as background 3 papers
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Several theoretical efforts have been made to explore HQ dynamics and the associated experimental observables such as nuclear suppression factor $R_AA$, flow coefficients [ref] .
Dragging heavy quark in an anisotropic QCD medium beyond the static limit · Introduction · 0.92
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The heavy quark transport, its energy loss, and the associated physical observables such as nuclear suppression factor $R_AA$, flow coefficients, etc have been investigated in several works in the literatures [ref] .
Heavy quark transport in an anisotropic hot QCD medium: Collisional and Radiative processes · Introduction · 0.93
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Several studies have been performed to explore the heavy quark transport coefficients, and the associated measured observables in heavy-ion collisions such as nuclear modification factor $R_AA$, directed and elliptic flow coefficients in the hot QCD medium [ref] .
Heavy quark transport coefficients in a viscous QCD medium with collisional and radiative processes · Introduction · 0.95
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