2006/07/31 by J. R. Adams, Star Collaboration, M. M. Aggarwal +98 · 57 citations
Mathematics · Physics and Astronomy · #Charge (physics) #Charged particle #High-Energy Particle Collisions Research #Ion #Mathematical analysis #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudorapidity #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Sign (mathematics) #Substructure #nucl-ex
paper · pdf · doi:10.1103/physrevc.75.034901
published in Physical Review C 75(3) (American Institute of Physics) · 18 pages, 8 figures, 2 tables submitted- Revised version Accepted-in press Phys. Rev. C
arxiv created 2007/01/24 · openalex publication_date 2007/03/08 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/08/05
We report charged particle pair correlation analyses in the space of \ensuremathΔ\ensuremathφ (azimuth) and \ensuremathΔ\ensuremathη (pseudorapidity), for central Au+Au collisions at √sNN=200 GeV in the STAR detector. The analysis involves unlike-sign charged pairs and like-sign charged pairs, which are transformed into charge-dependent (CD) signals and charge-independent (CI) signals. We present detailed parametrizations of the data. A model featuring dense gluonic hot spots as first proposed by Van Hove predicts that the observables under investigation would have sensitivity to such a substructure should it occur, and the model also motivates selection of transverse momenta in the range 0.8<pt<2.0 GeV/c. Both CD and CI correlations of high statistical significance are observed, and possible interpretations are discussed.