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Anisotropic momentum broadening in the 2+1D Glasma: analytic weak field approximation and lattice simulations

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arxiv 2001.10001 v2 pith:53QAVO3L submitted 2020-01-27 hep-ph hep-latnucl-th

Anisotropic momentum broadening in the 2+1D Glasma: analytic weak field approximation and lattice simulations

Andreas Ipp , David I. M\"uller , Daniel Schuh This is my paper
classification hep-ph hep-latnucl-th
keywords broadeningglasmamomentumanisotropiclatticeresultssimulationstransverse
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In heavy ion collisions, transverse momentum broadening quantifies the modification of a hard probe due to interactions with the quark-gluon plasma (QGP). We calculate momentum broadening in the Glasma, which is the highly non-isotropic precursor stage of the QGP right after the collision. We show that the Glasma leads to anisotropic momentum broadening: high energy partons accumulate more momentum along the beam axis than transverse to it. The physical origin of anisotropic broadening can be traced back to differences in the shapes of chromo-electric and chromo-magnetic flux tubes in the Glasma. We provide semi-analytic results for momentum broadening in the dilute Glasma and numerical results from real-time lattice simulations of the non-perturbative dense Glasma.

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Cited by 2 Pith papers

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  1. Light-front Hamiltonian jet evolution in the Glasma

    hep-ph 2026-05 unverdicted novelty 7.0

    A light-front Hamiltonian method evolves a quark through Glasma fields to obtain transverse momentum broadening and jet quenching consistent with classical scaling in saturation momentum.

  2. Kinetic and canonical momentum broadening in the Glasma

    hep-ph 2026-04 unverdicted novelty 6.0

    Derives gauge-invariant equations of motion for kinetic and canonical momentum of particles in a classical non-Abelian background, finding that transverse fields contribute to kinetic momentum broadening even in the e...