Abstract
We calculate higher-order corrections to the quenching factor of heavy-quark jets due to hard, in-medium splittings in the framework of the BDMPS-Z formalism. These corrections turn out to be sensitive to a single mass-scale sim ({hat{q}} L)^{{nicefrac {1}{2}}}, where {hat{q}} is the medium transport coefficient and L the path length, and allow to draw a distinction between the way light, with m < ({hat{q}} L)^{1/2} (in contrast to massless m=0), and genuinely heavy, with m > ({hat{q}} L)^{1/2}, quark jets are quenched in the medium. We show that the corrections to the quenching factor at high energies are double-logarithmic and qualitatively of the same order as for the massless quark jet.
Highlights
Jets are formed in the process of soft and collinear QCD radiation that results in a spray of collimated hadrons and energy deposition in the detector [1]
It is widely accepted that the BDMPS-Z formalism of radiative energy loss [5,6,7] describes the propagation and multiple scattering of quark and gluon jets in the nuclear QCD medium that is produced in heavy ion collisions at LHC, for a review see Ref. [8]
We have calculated a subset of higher-order corrections for massive-quark jet propagating in the quark-gluon plasma that are enhanced by logarithms of the jet energy
Summary
Jets are formed in the process of soft and collinear QCD radiation that results in a spray of collimated hadrons and energy deposition in the detector [1]. The resulting restriction of the phase space for radiation, and energy loss, leads to a systematically smaller suppression of singleinclusive hadron spectra the larger the mass of the constituent quarks. This was followed up by a more thorough analysis in [13,14], where it was shown that the heavy quark quenching factors get further corrections when the correct phase space constraints are taken into account. The results demonstrate how these contribution lead to the enhanced quenching of massless quark/gluon jets as compared to single partons.
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