Quark damping and energy loss in the high temperature QCD

Thoma, Markus H.; Gyulassy, Miklós

doi:10.1016/s0550-3213(05)80031-8

Cited by 320 publications

(442 citation statements)

References 12 publications

Supporting

Mentioning

422

Contrasting

Unclassified

Order By: Relevance

“…A calculation performed in a semi-classical framework based on the collective response of the medium (previously used in Ref. [5] to study the stationary collisional loss −∆E ∞ ), indeed showed a large reduction (scaling as γ) of −∆E ∞ . While half of the effect could be attributed to a modification of initial bremsstrahlung in medium as compared to vacuum, the other half was interpreted as a retardation of purely collisional loss.…”

Section: Introductionmentioning

confidence: 79%

Energy loss of a heavy quark produced in a finite-size quark–gluon plasma

Gossiaux

Aichelin²,

Brandt³

et al. 2007

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

View full text Add to dashboard Cite

Abstract. We study the energy loss of an energetic heavy quark produced in a high temperature quark-gluon plasma and travelling a finite distance before emerging in the vacuum. While the retardation time of purely collisional energy loss is found to be of the order of the Debye screening length, we find that the contributions from transition radiation and the Ter-Mikayelian effect do not compensate, leading to a energy loss. reduction of the zeroth order (in an opacity expansion) energy loss.

show abstract

Section: Introductionmentioning

confidence: 79%

Energy loss of a heavy quark produced in a finite-size quark–gluon plasma

Gossiaux

Aichelin²,

Brandt³

et al. 2007

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

View full text Add to dashboard Cite

show abstract

“…Due to the large mass effect, both radiative and elastic energy losses remain significantly smaller for bottom quarks than for light quark and charm jets, but the elastic loss can now be greater than inelastic up to ∼ 15GeV. The uncertainties from the Coulomb log, as illustrated by the difference between the TG and BT lines [4,5], are largest for the heaviest b quark: as they are not ultrarelativistic, the leading log approximation breaks down in the jet energy range accessible at RHIC. …”

Section: Introductionmentioning

confidence: 99%

Heavy Quark Jet Quenching with Collisional plus Radiative Energy Loss and Path Length Fluctuations

et al. 2007

Self Cite

View full text Add to dashboard Cite

With the QGP opacity computed perturbatively and with the global entropy constraints imposed by the observed dN ch /dy ≈ 1000, radiative energy loss alone cannot account for the observed suppression of single non-photonic electrons. We show that collisional energy loss, which previously has been neglected, is comparable to radiative loss for both light and heavy jets and may in fact be the dominant mechanism for bottom quarks. Predictions taking into account both radiative and collisional losses significantly reduce the discrepancy with data. In addition to elastic energy loss, it is critical to include jet path length fluctuations to account for the observed pion suppression.

show abstract

“…charm (c) and beauty (b) quarks, are produced at the initial stage of the collision, almost exclusively in hard partonic scattering processes. Therefore, they interact with the medium in all phases of the system evolution, propagating through the hot and dense medium and losing energy via radiative [7,8] and collisional scattering [9][10][11] processes. Heavy-flavour hadrons and their decay products are thus effective probes to study the properties of the medium created in heavy-ion collisions.…”

mentioning

confidence: 99%

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at s N N = 2.76 $$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}}=2.76 $$ TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2016

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb-Pb collisions at √ s NN = 2.76 TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient (v 2 ) represents the elliptic flow. The v 2 coefficient of inclusive electrons is measured in three centrality classes (0-10%, 10-20% and 20-40%) with the event plane and the scalar product methods in the transverse momentum (p T ) intervals 0.5-13 GeV/c and 0.5-8 GeV/c, respectively. After subtracting the background, mainly from photon conversions and Dalitz decays of neutral mesons, a positive v 2 of electrons from heavy-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9σ in the interval 2 < p T < 2.5 GeV/c in semicentral collisions (20-40%). The value of v 2 decreases towards more central collisions at low and intermediate p T (0.5 < p T < 3 GeV/c). The v 2 of electrons from heavy-flavour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4). The results are described within uncertainties by model calculations including substantial elastic interactions of heavy quarks with an expanding strongly-interacting medium. The ALICE collaboration 34 Keywords: Heavy Ion Experiments IntroductionThe main goal of the ALICE [1] experiment is the study of strongly-interacting matter at the high energy density and temperature reached in ultra-relativistic heavy-ion collisions at the Large Hadron Collider (LHC). In these collisions the formation of a deconfined state of quarks and gluons, the Quark-Gluon Plasma (QGP), is predicted by Quantum ChromoDynamic (QCD) calculations on the lattice [2][3][4][5][6]. Because of their large masses, heavy quarks, i.e. charm (c) and beauty (b) quarks, are produced at the initial stage of the collision, almost exclusively in hard partonic scattering processes. Therefore, they interact with the medium in all phases of the system evolution, propagating through the hot and dense medium and losing energy via radiative [7,8] and collisional scattering [9][10][11] processes. Heavy-flavour hadrons and their decay products are thus effective probes to study the properties of the medium created in heavy-ion collisions. Heavy-quark energy loss in strongly-interacting matter can be studied via the modification of the transverse momentum (p T ) spectra of heavy-flavour hadrons and their decay products in heavy-ion collisions with respect to the proton-proton yield scaled by the number of binary nucleon-nucleon collisions, quantified by the nuclear modification factor (R AA ). A strong suppression of open charm hadrons and heavy-flavour decay leptons is observed for p T > 3 GeV/c in central collisions, both at RHIC ( √ s NN = 200 GeV) [12][13][14][15][16] -1 - JHEP09(2016)028and LHC ( √ s NN = 2.76 TeV) [17][18][19][20] energies. The PHENIX and STAR Collabor...

show abstract

Quark damping and energy loss in the high temperature QCD

Cited by 320 publications

References 12 publications

Energy loss of a heavy quark produced in a finite-size quark–gluon plasma

Energy loss of a heavy quark produced in a finite-size quark–gluon plasma

Heavy Quark Jet Quenching with Collisional plus Radiative Energy Loss and Path Length Fluctuations

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at s N N = 2.76 $$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}}=2.76 $$ TeV

Contact Info

Product

Resources

About