Medium induced gluon radiation off massive quarks fills the dead cone
By N. Armesto, C. Salgado, U. Wiedemann. 2003
277 citations recorded by the source corpus.
We calculate the transverse momentum dependence of the medium-induced gluon energy distribution radiated off massive quarks in spatially extended QCD matter. In the absence of a medium, the distribution shows a characteristic mass-dependent depletion of the gluon radiation for angles $\ensuremath{\theta}lm/E,$ the so-called dead cone effect. Medium modifications of this spectrum are calculated as a function of quark mass m, initial quark energy E, in-medium path length and density. Generically, medium-induced gluon radiation is found to fill the dead cone, but it is reduced at large gluon energies compared to the radiation off light quarks. We quantify the resulting mass dependence for momentum-averaged quantities (gluon energy distribution and average parton energy loss), compare it to simple approximation schemes and discuss its observable consequences for nucleus-nucleus collisions at the BNL RHIC and CERN LHC. In particular, our analysis does not favor the complete disappearance of energy loss effects from leading open charm spectra at the RHIC.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/7cc5b576f5177496abd5f909603a17bf66ece1bd
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Nuclear and High Energy Physics
- S. Hartnoll
- S. Gubser
- P. Kovtun
- Christopher P. Herzog
- A. Karch
- I. Moult
- A. Starinets
- Laurence G. Yaffe
Citations in the corpus
- Jet substructure at the Large Hadron Collider: A review of recent advances in theory and machine learning (2017, background): “Recently there has been interest in using observables designed for jet substructure to probe jet evolution in the QGP, with the hope of better understanding the medium [420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439].”
- Energy loss of a heavy quark moving through Script N = 4 supersymmetric Yang-Mills plasma (2006, background): “1.1 Heavy ion collisions 2 1.2 N =4 supersymmetric Yang-Mills theory 2 1.3 A toy model, and the plan of attack 4 1.4 Summary of results 5”