A remark on the sign change of the four-particle azimuthal cumulant in small systems

2018/01/31 by Adam Bzdak, Guo-Liang Ma · 7 citations
Mathematics · Physics and Astronomy · #Azimuth #Cumulant #Elliptic flow #Geology #High-Energy Particle Collisions Research #Mathematical analysis #Mathematics #Optics #Particle (ecology) #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Sign (mathematics) #Statistics #Transverse plane #hep-ex #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1016/j.physletb.2018.03.068

published in Physics Letters B 781, 117-121 (Elsevier BV) · 8 pages, 2 figures; PLB version, less equations, experimental points added

openalex publication_date 2018/03/29 · arxiv created 2018/04/03 · arxiv updated 2018/05/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The azimuthal cumulants, c22 and c24, originating from the global conservation of transverse momentum in the presence of hydro-like elliptic flow are calculated. We observe the sign change of c24 for small number of produced particles. This is in a qualitative agreement with the recent ATLAS measurement of multi-particle azimuthal correlations with the subevent cumulant method.

Citations

• Conservation laws and multiplicity evolution of spectra at energies available at the BNL Relativistic Heavy Ion Collider
• Is the analysis of flow at the CERN Super Proton Synchrotron reliable?
• Anisotropic flow from Lee–Yang zeros: a practical guide
• Effects of momentum conservation and flow on angular correlations observed in experiments at the BNL Relativistic Heavy Ion Collider
• Elliptic and Triangular Flow inp-Pb and Peripheral Pb-Pb Collisions from Parton Scatterings
• New method for measuring azimuthal distributions in nucleus-nucleus collisions
• High order cumulants of the azimuthal anisotropy in the dilute-dense limit: Connected graphs
• Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions