  We investigate the azimuthal anisotropy $v_2$ of particle production in
nucleus-nucleus collisions in the maximum entropy approach. This necessitates
two new phenomenological input parameters $\delta$ and $\lambda_2$ compared
with integrated multiplicity distributions. The parameter $\delta$ describes
the deformation of a flux tube and can be theoretically calculated in a bag
model with a bag constant which depends on the density of surrounding flux
tubes. The parameter $\lambda_2$ defines the anisotropy of the particle
distribution in momentum space and can be connected to $\delta$ via the
uncertainty relation. In this framework we compute the anisotropy $v_2$ as a
function of centrality, transverse momentum and rapidity in qualitative
agreement with LHC data.
