Erratum: Energy loss of charm quarks in the quark-gluon plasma: Collisional vs radiative losses [Phys. Rev. C<b>72</b>, 014905 (2005)]

Mustafa, Munshi G.

doi:10.1103/physrevc.74.019902

Cited by 128 publications

(204 citation statements)

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“…Renk derives phenomenological limits on radiative vs. collisional energy loss by considering quadratic vs. linear pathlength dependence and concludes that any elastic energy loss component has to be small [14]. In contrast, Mustafa and Thoma find that collisional energy loss has a significant influence on jet quenching [15,16]. Recent studies by Gyulassy and collaborators also point in this direction, see e.g.…”

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confidence: 98%

Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at the BNL Relativistic Heavy Ion Collider

et al. 2008

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We calculate and compare bremsstrahlung and collisional energy loss of hard partons traversing a quark-gluon plasma. Our treatment of both processes is complete at leading order in the coupling and accounts for the probabilistic nature of the jet energy loss. We find that the nuclear modification factor RAA for neutral π 0 production in heavy ion collisions is sensitive to the inclusion of collisional and radiative energy loss contributions while the averaged energy loss only slightly increases if collisional energy loss is included for parent parton energies E ≫ T . These results are important for the understanding of jet quenching in Au+Au collisions at 200 AGeV at RHIC. Comparison with data is performed applying the energy loss calculation to a relativistic ideal (3+1)-dimensional hydrodynamic description of the thermalized medium formed at RHIC.Introduction -Relativistic heavy ion collisions are designed to produce and study strongly interacting matter at high temperatures and densities. Experiments at the Relativistic Heavy Ion Collider (RHIC) have demonstrated that high p T hadrons in central A + A collisions are significantly suppressed in comparison with those in binary p + p collisions, scaled to nucleus-nucleus collisions [1,2,3]. This result has been referred to as jet quenching and has been attributed to the energy loss of hard p T partons due to induced gluon bremsstrahlung in a hot quark-gluon plasma. Bremsstrahlung energy loss has been calculated in several theoretical formalisms before [4,5,6,7,8,9]. Recently such bremsstrahlung calculations were implemented in models employing relativistic ideal (3+1)-dimensional hydrodynamics in order to calculate the nuclear modification factor R AA of neutral pions at RHIC [10,11,12]. Early estimates of the collisional energy loss which used asymptotic arguments indicated that the radiative energy loss is much larger than elastic energy loss [13]. Zakarhov compared radiative energy loss in the light-cone path integral approach and collisional energy loss employing the Bjorken method and concluded collisional energy loss is relatively small in comparison to the radiative one [7]. Renk derives phenomenological limits on radiative vs. collisional energy loss by considering quadratic vs. linear pathlength dependence and concludes that any elastic energy loss component has to be small [14]. In contrast, Mustafa and Thoma find that collisional energy loss has a significant influence on jet quenching [15,16]. Recent studies by Gyulassy and collaborators also point in this direction, see e.g. [17,18].The purpose of this study is to consistently incorporate collisional and radiative energy loss in the same formalism and to employ this formalism in a realistic description of energy loss of hard p T leading partons in the soft nuclear medium as described by (3+1)-dimensional hydrodynamics in 200 AGeV Au+Au collisions at RHIC.We will emphasize three points (the first two of which have been elucidated earlier [19] for bremsstrahlung energy loss). First, in many previous a...

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Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at the BNL Relativistic Heavy Ion Collider

et al. 2008

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“…Among the novelties presented was the work by K. Tuchin, who discussed heavy quark production in High Parton Density QCD in a quasi-classical approximation, including low-x quantum evolution, as well as heavy-quark production based on the effect of pair production in external fields [108]. For moderate transverse momenta (p T ≤ a few GeV/c) the energy loss of heavy quarks is thought to be dominated by inelastic collisions with medium constituents, rather than gluon radiation [109,110], because the heavy quarks are not ultra-relativistic and gluon radiation is suppressed by the so-called dead-cone effect [111]. These findings were highlighted in a comprehensive analysis of the non-photonic electron nuclear suppression factors measured at RHIC presented by M. Djordjevic [112,113].…”

Section: Heavy-quark Production Diffusion and Energy Lossmentioning

confidence: 99%

SQM 2006: theory summary and perspectives

Bass¹

2006

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

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“…The partial failure of radiative, perturbative energy loss led to renewed interest in energy loss from elastic collisions [13][14][15], although a self-consistent treatment of elastic and radiative energy loss in one proper unified theoretical framework is still under construction. It has also ushered in a period of renewed interest in nonperturbative mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Probing nuclear matter with jet conversions

Liu

Fries

2008

Phys. Rev. C

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We discuss the flavor of leading jet partons as a valuable probe of nuclear matter. We point out that the coupling of jets to nuclear matter naturally leads to an alteration of jet chemistry even at high transverse momentum p T . In particular, quantum chromodynamics (QCD) jets coupling to a chemically equilibrated quark gluon plasma in nuclear collisions will lead to hadron ratios at high transverse momentum p T that can differ significantly from their counterparts in p+p collisions. Flavor measurements could complement energy loss as a way to study interactions of hard QCD jets with nuclear matter. Roughly speaking they probe the inverse mean free path 1/λ while energy loss probes the average squared momentum transfer µ 2 /λ. We present some estimates for the rate of jet conversions in a consistent Fokker-Planck framework and their impact on future high-p T identified hadron measurements at RHIC and LHC. We also suggest some novel observables to test flavor effects.

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Erratum: Energy loss of charm quarks in the quark-gluon plasma: Collisional vs radiative losses [Phys. Rev. C72, 014905 (2005)]

Cited by 128 publications

References 0 publications

Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at the BNL Relativistic Heavy Ion Collider

Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at the BNL Relativistic Heavy Ion Collider

SQM 2006: theory summary and perspectives

Probing nuclear matter with jet conversions

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