An Overview of Fluctuation and Correlation Results in Relativistic Heavy Ion Collisions
نویسنده
چکیده
A great deal of recent data on event-by-event fluctuation and correlation measurements has been released by several experiments at the SPS and RHIC. Recent results on charge fluctuations, balance functions in pseudorapidity, and average transverse momentum fluctuations will be reviewed. The results will be compared to various model predictions after examining contributions to each observable from known physics processes.
منابع مشابه
Dileptons in Heavy-Ion Collisions
Due to their penetrating nature, dileptons are a valuable probe for the properties of the hot and/or dense medium created in relativistic heavy-ion collisions. Dilepton invariant-mass spectra provide direct access to the properties of the electromagnetic current-correlation function in strongly interacting matter. In this paper an overview is given of our current theoretical understanding of th...
متن کاملDiffusion or bounce back in relativistic heavy-ion collisions?
The time evolution of pseudorapidity distributions of produced charged hadrons in d+Au collisions at √ sNN = 200 GeV is investigated. Results of a nonequilibrium-statistical Relativistic Diffusion Model with three sources are compared with a macroscopic ”bounce back” model that does not allow for statistical equilibration at large times, but instead leads to motion reversal. When compared to th...
متن کاملModeling Magnetic Field in Heavy ion Collisions Using Two Different Nuclear Charge Density Distributions
By studying the properties of matter during heavy-ion collisions, a better understanding of the Quark-Gluon plasma is possible. One of the main areas of this study is the calculation of the magnetic field, particularly how the values of conductivity affects this field and how the field strength changes with proper time. In matching the theoretical calculations with results obtained in lab, two diffe...
متن کاملScaling Properties of Fluctuation Results from the PHENIX Experiment at RHIC
The PHENIX Experiment at the Relativistic Heavy Ion Collider has made measurements of event-by-event fluctuations in the charged particle multiplicity as a function of collision energy, centrality, collision species, and transverse momentum in several heavy ion collision systems. It is observed that the fluctuations in terms of σ/μ exhibit a universal power-law scaling as a function of Npartici...
متن کاملFluctuation and low transverse momentum correlation results from PHENIX
The PHENIX Experiment at the Relativistic Heavy Ion Collider has conducted a survey of fluctuations in charged hadron multiplicity in Au+Au and Cu+Cu collisions at √ sNN = 22, 62, and 200 GeV. A universal power law scaling for multiplicity fluctuations expressed as σ2/μ2 is observed as a function of Npart for all species studied that is independent of the transverse momentum range of the measur...
متن کامل