# Multiparticle azimuthal angular correlations in $pA$ collisions

## TL;DR

This paper calculates multiparticle azimuthal correlations in proton-nucleus collisions within the Color Glass Condensate framework, providing new insights into the $N_c$ scaling of multi-dipole correlators and cumulants.

## Contribution

It introduces a detailed evaluation of the 3-dipole correlator up to order $1/N_c^4$ and explores the $N_c$ scaling patterns of azimuthal cumulants in the CGC formalism.

## Key findings

- Computed the 3-dipole correlator up to $1/N_c^4$ order.
- Conjectured the $N_c$ scaling of azimuthal cumulants $c_n\{m\}$.
- Crosschecked the $N_c$ scaling with calculations of $c_2\{4\}$ in the dilute limit.

## Abstract

In the Color Glass Condensate formalism, we evaluate the 3-dipole correlator up to the $\frac{1}{N_c^4}$ order with $N_c$ being the number of colors, and compute the azimuthal cumulant $c_{123}$ for 3-particle productions. In addition, we discuss the patterns appearing in the $n$-dipole formula in terms of $\frac{1}{N_c}$ expansions. This allows us to conjecture the $N_c$ scaling of $c_n\{m\}$, which is crosschecked by our calculation of $c_2\{4\}$ in the dilute limit.