The nimbus of away-side jets

TL;DR

This paper discusses the conical structures around away-side jets, proposing equations for in-medium gluodynamics, and explores phenomena like Cherenkov gluons and their implications at RHIC and LHC energies.

Contribution

It introduces a set of equations for in-medium gluodynamics and explicitly solves them for a moving color charge, linking the theory to experimental data.

Findings

Nuclear permittivity greater than 1 induces shock waves via Cherenkov gluons.

Estimated real and imaginary parts of nuclear permittivity from RHIC data.

Predicted specific effects at LHC energies.

Abstract

The conical structure around the away-side jets is discussed. The equations of in-medium gluodynamics are proposed. Their classical lowest order solution is explicitly shown for a color charge moving with constant speed. For nuclear permittivity larger than 1 it describes the shock wave induced by emission of Cherenkov gluons. The values of real and imaginary parts of nuclear permittivity are estimated from fits of RHIC data. Specific effects at LHC energies are described.