Measurement of $R_{2}(\Delta\eta, \Delta\varphi)$ and $P_{2}(\Delta\eta, \Delta\varphi)$ correlation functions in pp collisions at $\sqrt{\textit{s}}$ = 13 TeV using ALICE data

Two-particle normalized cumulants of particle number correlations ($R_{2}$)and transverse momentum correlations ($P_{2}$), measured as a function ofrelative pseudorapidity and azimuthal angle difference $(\Delta\eta, \Delta\varphi)$,provide key information about particle production mechanisms,diffusivity, and conservation of charge and momentum in high-energycollisions. To complement the recent ALICE measurements in Pb--Pbcollisions, as well as for better understanding of the jetcontribution and nature of collectivity in small systems, theseobservables are measured in pp collisions at $\sqrt{\textit{s}}$ = 13 TeVwith similar transverse momentum range, 0.2 $\leq$ $\textit{p}_{\rm T}$ $\leq$ 2.0$\rm{GeV}/\textit{c}$. The $R_{2}$ and $P_{2}$ results on the near-and away-side are qualitatively similar, but differ quantitatively. Amuch narrower near-side peak is observed for $P_{2}$ compared to$R_{2}$ for both charge-independent and charge-dependent combinations,as in the recently published ALICE results for p--Pb and Pb--Pbcollisions. Since these results are sensitive to the interplay between the underlying event and mini-jets in pp collisions, they not only establish a baseline for heavy-ion collisions, but also allow a better understanding of signals that are compatible with the presence of collective effects in small systems.