Multiple pion pair production in a Regge-based model

TL;DR

This paper presents a Regge-based model for multiple pion pair production in central diffractive events at the LHC, aiding in understanding complex event topologies and particle multiplicities.

Contribution

It introduces a novel Regge-based approach to model multiple pion pair production in central diffractive events at high energies.

Findings

Model successfully describes multiple pion pair production

Provides insights into charged-particle multiplicity distributions

Enhances understanding of double-gap topologies at the LHC

Abstract

Central diffractive event topologies at the LHC energies can be identified by two different approaches. First, the forward scattered protons can be measured in Roman pots. Second, a veto on hadronic activity away from midrapidity can be imposed to define a double-gap topology. Such a double-gap topology trigger has been implemented by the ALICE collaboration in Run 1 and Run 2 of the LHC. The analysis of these events allows to determine the charged-particle multiplicity within the acceptance. The excellent particle identification capabilities of ALICE allows to study two-track events both in the pion and kaon sector. Events with measured charged particle multiplicity larger than two can arise from multiple pair production. A Regge-based approach for modeling such multiple pair production is presented.