Hydrodynamic excitation by jets in the expanding QGP

We study the hydrodynamic excitation by jets in QGP and the consequent particle spectra. Events with jets through the QGP in heavy-ion collisions are simulated by solving (3+1)-dimensional ideal hydrodynamic equations with source terms. Mach cone is formed and develops in the expanding medium. Especially in the case where jets travel through the off-central passage, the Mach cone directionally pushes back the radial flow of the background. As the result, the number of particles emitted in the direction of the push back decreases. This can be a direct signal of hydrodynamic excitation by jets and includes the information about the jet passage in the QGP medium.