Double parton interaction: the values of $\sigma_{\rm eff}$

TL;DR

This paper investigates the two parton showers mechanism for J/Ψ production, demonstrating it results in small σ_eff values consistent with experimental data, using a simple two-channel model.

Contribution

It introduces a two-channel approach to estimate σ_eff in J/Ψ pair production, linking the mechanism to observed small σ_eff values.

Findings

The mechanism predicts small σ_eff values for J/Ψ pairs.

The model's estimates agree with experimental measurements.

Provides a theoretical framework for understanding double parton interactions.

Abstract

In this letter we show that the two parton showers mechanism for $J/\Psi$ production, that has been discussed in Ref.[28], leads to small values of $\sigma_{\rm eff}$ for the production of a pair of $J/\Psi$. We develop a simple two channel approach to estimate the values of $\sigma_{\rm eff}$, which produces values that are in accord with the experimental data.