{"paper":{"title":"3D Initial-State Dynamics across scales: A Comparative Study of saturation and string-based descriptions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"String-based and saturation-based initial condition models agree on longitudinal deposition at low energies but differ substantially at higher energies.","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Hannah Elfner, Lucas Constantin, Niklas G\\\"otz, Oscar Garcia-Montero","submitted_at":"2026-05-16T10:03:53Z","abstract_excerpt":"We compare the longitudinal deposition of various conserved quantities in the initial condition models of a string based (SMASH) and a saturation based (McDipper) approach. SMASH has been shown to work reasonably well at lower collision energies as an initial condition for the SMASH-vHLLE hybrid approach, while McDipper, based on the color-glass-condensate (CGC), works well in the regime of perturbative QCD. The two models are capable of providing longitudinally resolved initial conditions, which is essential for 3D hydrodynamical simulations. The goal of this study is to interface the differe"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"while they are in good agreement at lower energies, their energy and baryon deposition differs substantially at higher center of mass energies.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The models are capable of providing longitudinally resolved initial conditions which is essential for 3D hydrodynamical simulations, and that direct comparison of deposition profiles across the full energy range can interface their regions of applicability (abstract).","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Comparison of SMASH and McDipper initial condition models shows agreement in longitudinal deposition at lower energies but substantial differences in energy and baryon deposition 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