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The hadronic nucleus-nucleus cross section and the nucleon size
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Even though the total hadronic nucleus-nucleus cross section is among the most fundamental observables, it has only recently been measured precisely for lead-lead collisions at the LHC. This measurement implies the nucleon width should be below 0.7 fm, which is in contradiction with all known state-of-the-art Bayesian estimates. We study the implications of the smaller nucleon width on quark-gluon plasma properties such as the bulk viscosity. The smaller nucleon width dramatically improves the description of several triple-differential observables.
Forward citations
Cited by 2 Pith papers
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Longitudinal Dynamics of Large and Small Systems from a 3D Bayesian Calibration of RHIC Top-energy Collision Data
A 3D Bayesian calibration of RHIC Au-Au and d-Au data constrains the longitudinal initial state and QGP viscosity, and its posterior predicts p-Au and 3He-Au flow measurements.
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Resolution-matched nuclear geometry and the nucleon-size ambiguity in relativistic heavy-ion collisions
The strong nucleon-width dependence of the Pb+Pb hadronic cross section is a geometric-inflation artifact; with the folded density fixed, σ_AA is width-insensitive and can constrain the 208Pb neutron skin to Δr_np ∈ [...
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