Higher-order corrections to heavy-quark jet quenching

Abstract

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 $$\sim ({\hat{q}} L)^{{\nicefrac {1}{2}}}$$ ∼(q^L)12 , where $${\hat{q}}$$ q^ is the medium transport coefficient and L the path length, and allow to draw a distinction between the way light, with $$m ({\hat{q}} L)^{1/2}$$ m>(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.