Forward Hadron Productions in high energy pp collisions from a Monte-Carlo generator for Color Glass Condensate

TL;DR

This paper introduces a Monte-Carlo event generator combining parton saturation effects and hadronization models to accurately simulate forward hadron production in high-energy proton-proton collisions across various energies and particle types.

Contribution

The paper presents a novel Monte-Carlo generator integrating the DHJ saturation formula with Lund string fragmentation for improved forward hadron production modeling.

Findings

Successfully reproduces transverse momentum spectra at RHIC and LHCf energies.

Provides better agreement with experimental data than previous models.

Demonstrates the importance of saturation effects in forward rapidity regions.

Abstract

We develop a Monte-Carlo event generator based on combination of a parton production formula including the effects of parton saturation (called the DHJ formula) and hadronization process due to the Lund string fragmentation model. This event generator is designed for the description of hadron productions at forward rapidities and in a wide transverse momentum range in high-energy proton-proton collisions. We analyze transverse momentum spectra of charged hadrons as well as identified particles; pion, kaon, (anti-)proton at RHIC energy, and ultra-forward neutral pion spectra from LHCf experiment. We compare our results to those obtained in other models based on parton-hadron duality and fragmentation functions.