Supervisor's Foreword; Acknowledgments; Contents; Abbreviations; Abstract; 1 Introduction ; 1.1 Quark Gluon Plasma; 1.2 Heavy-Ion Collisions; 1.3 Collective Flow; 1.4 Jet-Medium Interactions; 1.5 Two-Particle Deta-Dphi Correlation and the Ridge; 1.5.1 Why to Measure Two-Particle Deta-Dphi Correlation; 1.5.2 Two-Particle Deta-Dphi Correlation Method; 1.5.3 Near-Side Ridge; 1.5.4 Away-Side Shoulder; References; 2 STAR Experiment ; 2.1 Relativistic Heavy Ion Collider; 2.2 STAR Detector; 2.2.1 Time Projection Chamber; 2.2.2 Forward Time Projection Chamber; 2.2.3 Zero Degree Calorimeter

2.2.4 Minimum Bias Event2.2.5 Centrality Definition in Heavy-Ion Collisions; References; 3 Higher Harmonics v3 ; 3.1 Two-Particle Q-Cumulant Method; 3.2 Data Sample and Analysis Cuts; 3.3 v3 Measurement Result; References; 4 Isolation of Flow and Nonflow Correlations; 4.1 Analysis Method; 4.2 Data Analysis; 4.2.1 Data Samples and Analysis Cuts; 4.2.2 Non-uniform Acceptance Correction; 4.2.3 Track Merging Effect; 4.2.4 Two- and Four-Particle Cumulant Measurements; 4.2.5 Nonflow Parameterization; 4.3 Results and Discussion; 4.3.1 Systematic Uncertainties; 4.4 Summary; References

5 `Ridge' in d+Au 5.1 Data Sample and Analysis Cuts; 5.2 Centrality Definition in d+Au Collisions; 5.2.1 Comparison Between Centrality Definitions; 5.2.2 Comparison with Au+Au Centrality; 5.3 Correlation Analysis; 5.3.1 Systematic Uncertainty; 5.4 Two-Particle Correlation at Mid-Rapidity; 5.4.1 Central and Peripheral Dphi Correlations; 5.4.2 The Near-Side Jetlike Deta Correlations; 5.5 Event-Selection Effect on Jetlike Correlated Yield; 5.5.1 Centrality Selection Methods; 5.5.2 Multiplicity Dependence; 5.5.3 pT Dependence; 5.5.4 Discussion

5.5.5 Low-Multiplicity Dphi Correlated Yield Subtraction5.6 Two-Particle Dphi Correlation at Forward Rapidities; 5.7 Near-Side Long-Range Ridge Deta Dependence; 5.8 Fourier Coefficients; 5.8.1 Systematic Uncertainty; 5.8.2 Results; 5.9 Summary; References; 6 Conclusion ; Appendix Kinematic Variables ; VITA