Hidden asymmetry and long range rapidity correlations

Abstract

Interpretation of long-range rapidity correlations in terms of the fluctuating rapidity density distribution of the system created in high-energy collisions is proposed. When applied to recent data of the STAR coll., it shows a substantial asymmetric component in the shape of this system in central Au-Au collisions, implying that boost invariance is violated on the event-by-event basis even at central rapidity. This effect may seriously influence the hydrodynamic expansion of the system.

9 pages, new section 5 with comments, to appear in Phys. Lett. B

References in corpus (6)

• Phobos results on charged particle multiplicity and pseudorapidity distributions in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra-relativistic energies
• Directed flow in ultrarelativistic heavy-ion collisions
• Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Understanding anisotropy generated by fluctuations in heavy-ion collisions
• Wounded quarks and diquarks in high energy collisions
• Forward-backward multiplicity correlations in the wounded nucleon model

Cited by in corpus (11)

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• Measurement of forward-backward multiplicity correlations in lead-lead, proton-lead and proton-proton collisions with the ATLAS detector
• Forward-backward multiplicity fluctuation and longitudinal harmonics in high-energy nuclear collisions
• Multi-particle long-range rapidity correlations from fluctuation of the fireball longitudinal shape
• Forward-backward multiplicity correlations in relativistic heavy-ion collisions in a superposition approach
• Symmetric correlations as seen at RHIC
• System evolution of forward-backward multiplicity correlations in a multi-phase transport model
• Rapidity dependence of transverse-momentum multiplicity correlations
• Multiplicity fluctuations and correlations in 5.02 TeV p+Pb collisions at zero impact parameter
• Cumulants from fluctuating width of rapidity distribution