Higher-order corrections to heavy-quark jet quenching
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 $${\h...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-07-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-7061-4 |
| Summary: | Abstract We calculate higher-order corrections to the quenching factor of heavy-quark jets due to hard, in-medium splittings in the framework of the BDMPS-Z formalism. These corrections turn out to be sensitive to a single mass-scale $$\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}$$ m<(q^L)1/2 (in contrast to massless $$m=0$$ m=0 ), and genuinely heavy, with $$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. |
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| ISSN: | 1434-6044 1434-6052 |