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Charge Multiplicity Asymmetry Correlation Study Searching for Local Parity Violation at RHIC for STAR Collaboration

Wang, Quan.

Charge Multiplicity Asymmetry Correlation Study Searching for Local Parity Violation at RHIC for STAR Collaboration [electronic resource] / by Quan Wang. - XXI, 134 p. 77 illus., 72 illus. in color. online resource. - Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5053 . - Springer Theses, Recognizing Outstanding Ph.D. Research, .

Introduction -- Experiment -- Data Analysis -- Results and Discussions -- Summary -- Appendix.

It has been suggested that local parity violation (LPV) in Quantum Chromodynamics (QCD) would lead to charge separation of quarks by the Chiral Magnetic Effect (CME) in heavy ion collisions. Charge Multiplicity Asymmetry Correlation Study Searching for Local Parity Violation at RHIC for STAR Collaboration presents the detailed study of charge separation with respect to the event plane. Results on charge multiplicity asymmetry in Au+Au and d+Au collisions at 200 GeV by the STAR experiment are reported. It was found that the correlation results could not be explained by CME alone. Additionally, the charge separation signal as a function of the measured azimuthal angle range as well as the event-by-event anisotropy parameter are studied. These results indicate that the charge separation effect appears to be in-plane rather than out-of-plane. It is discovered that the charge separation effect is proportional to the event-by-event azimuthal anisotropy and consistent with zero in events with zero azimuthal anisotropy. These studies suggest that the charge separation effect, within the statistical error, may be a net effect of event anisotropy and correlated particle production. A potential upper limit on the CME is also presented through this data.

9783319007564

10.1007/978-3-319-00756-4 doi


Physics.
Quantum field theory.
String theory.
Nuclear physics.
Heavy ions.
Hadrons.
Elementary particles (Physics).
Particle acceleration.
Physics.
Nuclear Physics, Heavy Ions, Hadrons.
Particle Acceleration and Detection, Beam Physics.
Elementary Particles, Quantum Field Theory.
Quantum Field Theories, String Theory.

QC770-798 QC702.7.H42 QC793.5.H32-793.5.H329

539.7092