arXiv subjects

Magdalena Djordjevic

Publications and source records attributed to Magdalena Djordjevic.

56 records · Page 4Linked to original sources

arXiv2003

The Ter-Mikayelian Effect on QCD Radiative Energy Loss

The color dielectric modification of the gluon dispersion relation in a dense QCD medium suppresses both the soft and collinear gluon radiation associated with jet production. We compute both the longitudinal and transverse plasmon contributions to the zeroth order in opacity radiative energy loss. This QCD analog of the Ter-Mikayelian effect in QED leads to $\sim 30%$ reduction of the energy loss of high transverse momentum charm quarks produced in a QCD plasma with a characteristic Debye mass $μ\sim 0.5$ GeV.

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arXiv2003

Where is the charm quark energy loss at RHIC?

Heavy quark energy loss in a hot QCD plasma is computed taking into account the competing effects due to suppression of zeroth order gluon radiation below the plasma frequency and the enhancement of gluon radiation due to first order medium induced Bremsstrahlung. The results suggest a surprising degree of cancellation between the two medium effects for charm quarks and provides a possible explanation for the null effect observed by PHENIX in the prompt electron spectrum in Au+Au at $\surd s=$ 130 AGeV.

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