Landau Pomeranchuk Midgal Effect and Charm Production in $pp$ Collisions at Large Hadron Collider Energies using the Parton Cascade Model

TL;DR

This paper investigates how the Landau Pomeranchuk Midgal effect influences charm quark production in proton-proton collisions at LHC energies, using a kinetic theory approach based on the Boltzmann equation.

Contribution

It introduces a detailed kinetic model incorporating the LPM effect to study charm production dynamics at high energies in proton-proton collisions.

Findings

LPM effect becomes more significant at higher energies and central rapidities.

The LPM effect can notably alter charm quark momentum distributions.

Charm production is sensitive to the LPM effect at low transverse momenta.

Abstract

We study the impact of the Landau Pomeranchuk Midgal (LPM) effect on the dynamics of parton interactions in proton proton collisions at the Large Hadron Collider energies. For our investigation we utilize a microscopic kinetic theory based on the Boltzmann equation. The calculation traces the space-time evolution of the cascading partons interacting via semihard pQCD scatterings and fragmentations. We focus on the impact of the LPM effect on the production of charm quarks, since their production is exclusively governed by processes well described in our kinetic theory. The LPM effect is found to become more prominent as the collision energy rises and at central rapidities and may significantly affect the model's predicted charm distributions at low momenta.