  The measurement of two-particle angular correlation functions in
high-multiplicity $e^+e^-$ collisions at $\sqrt{s}=10.52$ GeV is reported. In
this study, the $89.5~{\text{fb}}^{-1}$ of hadronic $e^+e^-$ annihilation data
collected by the Belle detector at KEKB are used. Two-particle angular
correlation functions are measured in the full relative azimuthal angle
($\Delta \phi$) and three units of pseudorapidity ($\Delta \eta$), defined by
either the electron beam axis or the event-shape thrust axis, and are studied
as a function of charged-particle multiplicity. The measurement in the thrust
axis analysis, with mostly outgoing quark pairs determining the reference axis,
is sensitive to the region of additional soft gluon emissions. No significant
anisotropic collective behavior is observed with either coordinate analyses.
Near-side jet correlations appear to be absent in the thrust axis analysis. The
measurements are compared to predictions from various event generators and are
expected to provide new constraints to the phenomenological models in the
low-energy regime.
