Energy and momentum deposited into a QCD medium by a jet shower
arXiv:0903.2255 · doi:10.1103/PhysRevLett.103.152303
Abstract
Hard partons moving through a dense QCD medium lose energy by radiative emissions and elastic scatterings. Deposition of the radiative contribution into the medium requires rescattering of the radiated gluons. We compute the total energy loss and its deposition into the medium self-consistently within the same formalism, assuming perturbative interaction between probe and medium. The same transport coefficients that control energy loss of the hard parton determine how the energy is deposited into the medium; this allows a parameter free calculation of the latter once the former have been computed or extracted from experimental energy loss data. We compute them for a perturbative medium in hard thermal loop (HTL) approximation. Assuming that the deposited energy-momentum is equilibrated after a short relaxation time, we compute the medium's hydrodynamical response and obtain a conical pattern that is strongly enhanced by showering.
4 pages, 3 figures, revtex4, intro modified, typos corrected
References in corpus (10)
- Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at RHIC
- The wake of a quark moving through a strongly-coupled supersymmetric Yang-Mills plasma
- Sonic booms and diffusion wakes generated by a heavy quark in thermal AdS/CFT
- Indications of Conical Emission of Charged Hadrons at the BNL Relativistic Heavy Ion Collider
- Higher twist jet broadening and classical propagation
- The sound produced by a fast parton in the quark-gluon plasma is a "crescendo"
- System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at sqrt(s_NN) = 200 and 62.4 GeV
- A comparative study of Jet-quenching Schemes
- Mach cones in the quark-gluon plasma: Viscosity, speed of sound, and effects of finite source structure
- Photon bremsstrahlung and diffusive broadening of a hard jet