Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-08-03
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, No figure
Scientific paper
In the article by M. G. Mustafa published in Phys. Rev. C {\bf 72}, 014905 (2005) the author has estimated the total energy loss of a charm quark and quenching of hadron spectra due to the collisional energy loss of energetic partons in an expanding quark-gluon plasma employing Fokker-Planck equation. We wish to point out through this Comment that some of conceptual and numerical results of the said paper are unreliable. For the sake of clarity our discussion will focus on the massless case (although a few remarks on the $m\neq 0$ case are also made).
Menon Jayakrishnan V.
Mishra Madhukar
Patra Binoy K.
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