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arXiv · 2307.11251

On the momentum broadening of in-medium jet evolution using a light-front Hamiltonian approach

Meijian Li·Tuomas Lappi·Xingbo Zhao·Carlos A. Salgado
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Abstract

We have developed a non-perturbative light-front Hamiltonian formalism to simulate the real-time evolution of a quark state in a SU(3) colored medium, with a series of works. In this proceeding article, we focus on the transverse momentum broadening of an in-medium quark jet. We perform the numerical simulation of the quark jet evolution in the $\ket{q}+\ket{qg}$ Fock space at various medium densities. By analyzing the resulting jet light-front wavefunction, we extract the gluon emission rate and the non-eikonal quenching parameter. Additionally, we provide the analytical derivation of the eikonal expectation value of the quark-gluon state's transverse momentum for any color configuration and arbitrary spatial distribution. This study can help understand jet momentum broadening beyond the eikonal limit.

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Meijian Li, Tuomas Lappi, Xingbo Zhao, Carlos A. Salgado. 2023-07-20. On the momentum broadening of in-medium jet evolution using a light-front Hamiltonian approach. https://arxiv.org/abs/2307.11251

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