  We present measurements of two-particle differential number correlation
functions $R_{2}$ and transverse momentum correlation functions $P_{2}$,
obtained from p-Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV. The
results are obtained using charged particles in the pseudorapidity range
$|\eta| <$ 1.0, and transverse momentum range $0.2 < p_{\rm T} < 2.0$ GeV/$c$
as a function of pair separation in pseudorapidity, $|\Delta\eta|$, azimuthal
angle, $\Delta\varphi$, and for several charged-particle multiplicity classes.
Measurements are carried out for like-sign and unlike-sign charged-particle
pairs separately and combined to obtain charge-independent and charge-dependent
correlation functions. We study the evolution of the width of the near-side
peak of these correlation functions with collision centrality. Additionally, we
study Fourier decompositions of the correlators in $\Delta\varphi$ as a
function of the pair separation $|\Delta\eta|$. Significant differences in the
dependence of their harmonic coefficients on multiplicity classes are found.
These differences can be exploited, in theoretical models, to obtain further
insight into charged-particle production and transport in heavy-ion collisions.
Moreover, an upper limit of non-flow contributions to flow coefficients $v_{n}$
measured in Pb-Pb collisions based on the relative strength of Fourier
coefficients measured in p-Pb interactions is estimated.
