Multiharmonic Correlations of Different Flow Amplitudes in Pb-Pb Collisions at sNN =2.76 TeV

Summary, in English

The event-by-event correlations between three flow amplitudes are measured for the first time in Pb-Pb collisions, using higher-order symmetric cumulants. We find that different three-harmonic correlations develop during the collective evolution of the medium when compared to correlations that exist in the initial state. These new results cannot be interpreted in terms of previous lower-order flow measurements since contributions from two-harmonic correlations are explicitly removed in the new observables. A comparison to Monte Carlo simulations provides new and independent constraints for the initial conditions and system properties of nuclear matter created in heavy-ion collisions. © 2021 CERN, for the ALICE Collaboration.

• Author: S Acharya; Jonatan Adolfsson; Sumit Basu; Peter Christiansen; Oliver Matonoha; Adrian Nassirpour; Alice Ohlson; Anders Oskarsson; Tuva Richert; Omar Vazquez Rueda; David Silvermyr; N Zurlo
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration
• Publishing year: 2021-08-27
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 127
• Issue: 9
• Links: http://dx.doi.org/10.1103/PhysRevLett.127.092302
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Keywords: Binary alloys; Colliding beam accelerators; Heavy ions; Monte Carlo methods; Vanadium alloys; Event correlation; Harmonic correlation; Heavy ion collision; Initial conditions; Multiharmonic; Nuclear matters; Pb-Pb collisions; System property; Lead alloys
• Status: Published
• ISBN/ISSN/Other: ISSN: 1079-7114