Charge conservation at energies available at the BNL Relativistic Heavy Ion Collider and contributions to local parity violation observables

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.014913· OSTI ID:21499364

Schlichting, Soeren; Pratt, Scott ^[1]

---

1. Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)

Relativistic heavy ion collisions provide laboratory environments from which one can study the creation of a novel state of matter, the quark-gluon plasma. The existence of such a state is postulated to alter the mechanism and evolution of charge production, which then becomes manifest in charge correlations. We study the separation of balancing charges at kinetic freeze-out by analyzing recent results on balancing charge correlations for Au + Au collisions at {radical}(s{sub NN})=200 GeV. We find that in central collisions, the spatial points from which balancing charges are emitted are characterized by smaller relative angles. These results are consistent with the expectation that charge production occurred later in the collision, as would be expected for delayed hadronization. An alternative explanation would be that the charges were produced early, perhaps with a different mechanism where the charge production mechanism was altered from string breaking which tends to separate the charges in relative rapidity. The alternative explanation would also rely on the diffusion of charges being small. In addition we calculate the contributions from charge-balance correlations to STAR's local parity violation observable. We find that local charge conservation, when combined with elliptic flow, explains the bulk of STAR's measurement.

• OSTI ID: 21499364
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 1; Other Information: DOI: 10.1103/PhysRevC.83.014913; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
BNL
BROOKHAVEN RHIC
CHARGE CONSERVATION
COLLISIONS
COMPUTERIZED SIMULATION
CORRELATIONS
DIFFUSION
EVOLUTION
FREEZING OUT
GEV RANGE 100-1000
GOLD
HEAVY ION REACTIONS
PARITY
PARTICLE RAPIDITY
QUARK MATTER
RELATIVISTIC RANGE
ACCELERATORS
ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
GEV RANGE
HEAVY ION ACCELERATORS
MATTER
METALS
NATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
SEPARATION PROCESSES
SIMULATION
STORAGE RINGS
TRANSITION ELEMENTS
US AEC
US DOE
US ERDA
US ORGANIZATIONS