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Revealing the harmonic structure of nuclear two-body correlations in high-energy heavy-ion collisions

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arxiv 2504.02481 v1 pith:EGGV3WUR submitted 2025-04-03 nucl-th hep-exhep-phnucl-ex

Revealing the harmonic structure of nuclear two-body correlations in high-energy heavy-ion collisions

classification nucl-th hep-exhep-phnucl-ex
keywords correlationsnuclearstructurecollisionsharmonicheavy-ionhigh-energynuclei
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Smashing nuclei at ultrarelativistic speeds and analyzing the momentum distribution of outgoing debris provides a powerful method to probe the many-body properties of the incoming nuclear ground states. Within a perturbative description of initial-state fluctuations in the quark-gluon plasma, we express the measurement of anisotropic flow in ultra-central heavy-ion collisions as the quantum-mechanical average of a specific set of operators measuring the harmonic structure of the two-body azimuthal correlations among nucleons in the colliding states. These observables shed a new light on spatial correlations in atomic nuclei, while enabling us to test the complementary pictures of nuclear structure delivered by low- and high-energy experiments on the basis of state-of-the-art theoretical approaches rooted in quantum chromodynamics.

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Cited by 3 Pith papers

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  3. The size of the quark-gluon plasma in ultracentral collisions: impact of initial density fluctuations on the average transverse momentum

    nucl-th 2025-11 unverdicted novelty 5.0

    Volume variation with multiplicity in ultracentral collisions is small when total entropy scales with nuclear mass number, as shown by relating it to initial density fluctuation profiles.