Charm quark energy loss in infinite QCD matter using a parton cascade model

Younus, Mohammed; Coleman-Smith, Christopher E.; Bass, Steffen A.; Srivastava, D. K.

doi:10.1103/physrevc.91.024912

Cited by 26 publications

(18 citation statements)

References 93 publications

(47 reference statements)

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“…Therefore, the evolution of the HQs in the thermal bath of light quarks and gluons can be treated within the ambit of Brownian motion, although a detailed investigation of this problem within the framework of Boltzmann equation has revealed that the evolution of charm quarks as a Brownian particle requires some corrections [12] (see also [13,14,15,16,17,18]). …”

Section: Introductionmentioning

confidence: 99%

Heavy quark diffusion in the pre-equilibrium stage of heavy ion collisions

Das

Ruggieri

Mazumder

et al. 2015

J. Phys. G: Nucl. Part. Phys.

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Abstract. The drag and diffusion coefficients of heavy quarks (HQs) have been evaluated in the pre-equilibrium phase of the evolving fireball produced in heavy ion collisions at RHIC and LHC energies. The KLN and classical Yang-Mills spectra have been used for describing the momentum distributions of the gluons produced just after the collisions but before they thermalize. The interaction of the HQs with these gluons has been treated within the framework of perturbative QCD. We have observed that the HQs are dragged almost equally by the kinetically equilibrated and out-of-equilibrium gluonic systems. We have also noticed that the HQs diffusion in the pre-equilibrium gluonic phase is as fast as in the kinetically equilibrated gluons. Moreover, the diffusion is faster in the pre-equilibrium phase than in the chemically equilibrated quark-gluon plasma. These findings may have significant impact on the analysis of experimental results on the elliptic flow and the high momentum suppression of the open charm and beauty hadrons.

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Section: Introductionmentioning

confidence: 99%

Heavy quark diffusion in the pre-equilibrium stage of heavy ion collisions

Das

Ruggieri

Mazumder

et al. 2015

J. Phys. G: Nucl. Part. Phys.

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“…Heavy flavor as a probe of the medium has generated significant interest in the recent past due to the suppression of its momentum distribution at large momentum in the thermal medium, denoted by R AA ðp T Þ [2][3][4][5] and its elliptic flow (v 2 ) [4]. Several attempts have been made to study these factors within the framework of the Fokker-Plank equation [1,[6][7][8][9][10][11][12][13][14][15][16][17][18] and Boltzmann equation [19][20][21][22]. However, the roles of hadronic phase have been ignored in these works.…”

Section: Introductionmentioning

confidence: 99%

Diffusion ofΛcin hot hadronic medium and its impact onΛc/
Ghosh
¹
,
Das
²
,
Greco
³

et al. 2014
Phys. Rev. D
27
3
18
0
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The drag and diffusion coefficients of the Λ c ð2286 MeVÞ have been evaluated in the hadronic medium which is expected to be formed in the later stages of the evolving fireball produced in heavy ion collisions at RHIC and LHC energies. The interactions between the Λ c and the hadrons in the medium have been derived from an effective hadronic Lagrangian, as well as from the scattering lengths obtained in the framework of heavy baryon chiral perturbation theory (HBχPT). In both the approaches, the magnitude of the transport coefficients turn out to be significant. A larger value is obtained in the former approach with respect to the latter. Significant values of the coefficients indicate a substantial amount of interaction of the Λ c with the hadronic thermal bath. Furthermore, the transport coefficients of the Λ c are found to be different from the transport coefficients of the D meson. The present study indicates that the hadronic medium has a significant impact on the Λ c =D ratio in heavy ion collisions.

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“…The last appears within the data error bars to be more close to the possibility to predict simultaneously both R AA and v 2 for Pb + Pb at √ s = 2.76 ATeV. Also other authors have in the past and more recently undertaken the study of charm quarks within a Boltzmann approach [40,41,42,43].…”

Section: Boltzmann Vs Fokker-planck Dynamicsmentioning

confidence: 84%

Anisotropic collective flows in a kinetic transport theory at fixed η/s(T)

Greco¹,

Scardina²,

Das³

et al. 2014

Proceedings of 52 International Winter Meeting on Nuclear Physics — PoS(Bormio2014)

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In this talk we review the basic concepts related with the study of the dynamics of the heavy quarks in the quark-gluon plasma created in ultra-relativistic heavy-ion collisions. We discuss the relevant physical scale as well the difficulties of the present theoretical approach to have a self-consistent description of the experimental data at both RHIC and LHC. In the second part we challenge the assumption of brownian motion for charm quarks and compare the dynamical evolution of charm and bottom quarks in a Fokker-Planck approach and in a Transport Boltzmann one. We show that while for bottom the motion appears quite close to a Brownian one, this does note seems to be the case for charms quarks. In particular the solution of the full twobody collision integral shows that the anisotropic flows are larger respect to those predicted by a Langevin dynamics.

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Charm quark energy loss in infinite QCD matter using a parton cascade model

Cited by 26 publications

References 93 publications

Heavy quark diffusion in the pre-equilibrium stage of heavy ion collisions

Heavy quark diffusion in the pre-equilibrium stage of heavy ion collisions

Diffusion ofΛcin hot hadronic medium and its impact onΛc/
Ghosh
¹
,
Das
²
,
Greco
³

et al. 2014
Phys. Rev. D
27
3
18
0
View full text Add to dashboard Cite

Anisotropic collective flows in a kinetic transport theory at fixed η/s(T)

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Charm quark energy loss in infinite QCD matter using a parton cascade model

Cited by 26 publications

References 93 publications

Heavy quark diffusion in the pre-equilibrium stage of heavy ion collisions

Heavy quark diffusion in the pre-equilibrium stage of heavy ion collisions

Diffusion ofΛcin hot hadronic medium and its impact onΛc/Ghosh1, Das2, Greco3 et al. 2014Phys. Rev. D273180View full textAdd to dashboardCite

Anisotropic collective flows in a kinetic transport theory at fixed η/s(T)

Contact Info

Product

Resources

About

Diffusion ofΛcin hot hadronic medium and its impact onΛc/
Ghosh
¹
,
Das
²
,
Greco
³

et al. 2014
Phys. Rev. D
27
3
18
0
View full text Add to dashboard Cite