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Baryon stopping and charge deposition in heavy-ion collisions due to gluon saturation

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arxiv 2409.06788 v3 pith:LDWV6W6F submitted 2024-09-10 hep-ph nucl-exnucl-th

Oscar Garcia-Montero , Sören Schlichting This is my paper · ORCID
classification hep-phnucl-exnucl-th
keywords chargedepositionbaryonalphacollisionsgluonheavy-ionstopping
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We compute baryon and electric charge deposition in high-energy heavy-ion collisions using the Color Glass Condensate (CGC) Effective Field Theory, where at leading order charge is deposited through multiple scatterings of valence quarks with a saturated gluon target. A simplified phenomenological formula is derived to describe charge deposition, from which the parametrical dependence with collisional energy and geometry can be extracted. We present an approximate analytical prediction of the so-called baryon stopping parameter $\alpha_B$, which shows excellent agreement with the state-of-the art extractions of $\alpha_B$ from experimental data. These results are further validated using the McDIPPER framework, by computing charge deposition at midrapidity across a range of collision energies ($\sqrt{s_{\rm NN}}= 62.4 - 5020$ GeV).

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Study the Longitudinal Entropy Deposition using d+Au Collision

    nucl-th 2026-07 conditional novelty 5.0 of 10

    A 3D entropy deposition model with β≈0.35 and n_BC-dependent rapidity loss, plus ab initio deuteron sampling, reproduces d+Au dNch/dη, spectra, and vn and transfers to p+Au, 3He+Au, and Au+Au.

  2. Effects of sub-nucleonic fluctuations on the longitudinal structure of heavy-ion collisions

    nucl-th 2025-01 conditional novelty 5.0 of 10

    Sub-nucleonic hotspots in the initial state increase longitudinal flow decorrelation and reduce baryon stopping in simulated Pb+Pb collisions, but the model still underestimates decorrelation in mid-central events.

  3. Effective theories for nuclei at high energies

    hep-ph 2025-02 unverdicted novelty 1.0 of 10

    This paper reviews the Color Glass Condensate effective theory, covering its foundations, its role in deep inelastic scattering, and its use in setting initial conditions for heavy-ion collisions.

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