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Martin Kirakosyan

Publications and source records attributed to Martin Kirakosyan.

4 recordsLinked to original sources

Performance of Monte Carlo event generators of pp collisions at NICA energies

This paper presents an overview of Monte Carlo(MC) event generators for simulation of proton-proton collisions along with the results on hadron production at Nuclotron-based Ion Collider fAcility (NICA) energies. Namely, mean multiplicities, mean transverse momenta, and rapidity distributions of p($\bar{\rm p}$), $π^{\pm}$, $\mathrm{K}^{\pm}$ at different collision energies are presented. We also study two-particle angular correlations for stable charged particles. Results of simulations with \pythia, \epos, and \urqmd event generators are compared to available data. Connections of studied quantities with physics mechanisms in MC generators are discussed. We suggest a tuned set of parameters to address observed discrepancies between data and \pythia.

hep-ph

Sound propagation and Mach cone in anisotropic hydrodynamics

This letter is based on a kinetic theory approach to anisotropic hydrodynamics. We derive the sound wave equation in anisotropic hydrodynamics and show that a corresponding wave front is ellipsoidal. The phenomenon of Mach cone emission in anisotropic hydrodynamics is studied. It is shown that Mach cone in anisotropic case becomes asymmetric, i. e. in this limit they're two different angles, left and right with respect to the ultrasonic particle direction, which are determined by the direction of ultrasonic particle propagation and the asymmetry coefficient.

hep-ph

On Collective Properties of Turbulent QED Plasma

Polarization properties of turbulent stochastically inhomogeneous ultrarelativistic QED plasma are studied. It is shown that the sign of nonlinear turbulent Landau damping corresponds to an instability of the spacelike modes and, for sufficiently large turbulent fields, to an actual instability of a system. Modification of plasmon dispersion relations due to turbulent effects are studied.

nucl-th

Turbulence-Induced Instabilities in EP and QGP

Polarization properties of turbulent stochastically inhomogeneous ultrarelativistic QED plasma are studied. It is shown that the sign of nonlinear turbulent Landau damping corresponds to an instability of the spacelike modes and, for sufficiently large turbulent fields, to an actual instability of a system.

nucl-th