  A measurement of charged hadron pair correlations in two-dimensional
$\Delta\eta\Delta\phi$ space is presented. The analysis is based on total 30
million central Be+Be collisions observed in the NA61/SHINE detector at the
CERN SPS for incident beam momenta of 19$A$, 30$A$, 40$A$, 75$A$, and 150$A$
GeV/$c$. Measurements were carried out for unlike-sign and like-sign charge
hadron pairs independently. The $C(\Delta\eta,\Delta\phi)$ correlation
functions were compared with results from a similar analysis on p+p
interactions at similar beam momenta per nucleon. General trends of the
back-to-back correlations are similar in central Be+Be collisions and p+p
interactions, but are suppressed in magnitude due to the increased
combinatorial background. Predictions from the EPOS and UrQMD models are
compared to the measurements. Evolution of an enhancement around
$(\Delta\eta,\Delta\phi) = (0,0)$ with incident energy is observed in central
Be+Be collisions. It is not predicted by both models and almost non-existing in
proton-proton collisions at the same momentum per nucleon.
