  We demonstrate that in the framework of the event-by-event hydrodynamics
followed by statistical hadronization, the proper charge conservation in the
mechanism of hadron production provides the crucial non-flow component and
leads to agreement with the two-dimensional two-particle correlation data in
relative azimuthal angle and pseudorapidity at soft transverse momenta
(p_T<2GeV). The fall-off of the same-side ridge in relative pseudorapidity
follows from the fact that a pair of particles with balanced charges is emitted
from the same fluid element, whose collective velocity collimates the momenta
of the pair. We reproduce basic experimental features of the two-dimensional
correlation function, such as the dependence on the relative charge and
centrality, as well as the related charge balance functions and the harmonic
flow coefficients as functions of the relative pseudorapidity.
