声明
摘要
ABSTRACT
Table of Contents
List of Tables
List of Figures
Chapter 1 Introduction
1.1 Quantum chromodynamies
1.1.1 Asymptotic Freedom and Confinement
1.1.2 The QCD phase diagram
1.2 Hevay-Ion collisions
1.2.1 Space-time evolution
1.3 Open heavy flavor measurement
1.3.1 Heavy-quark production in pp collisions
1.3.3 Nuclear effects on heavy-quark production
1.4 Overview recent open heavy flavor measurement in nucleus-nucleus collisions
1.4.1 Inclusive measurement with leptons
1.4.2 Charm hadron measurements
1.5 Special motivations for Ds measurement
Chapter 2 Experimental Setup
2.1 Relativistic Heavy Ion Collider
2.2 STAR detector
2.2.1 Time Projection Chamber
2.2.2 Time Of Flight detector
2.2.3 Heavy Flavor Tracker
2.2.4 SSD calibration
Chapter 3 Measurements of Ds+ meson transverse momentum spectrum in Au+Au collisions at √SNN=200 GeV
3.1 Event Selection
3.1.1 Data sets
3.1.2 Trigger and event selection
3.2 Centrality
3.3 Particle Identification
3.3.1 Track Selection
3.3.2 Particle Identification Cuts
3.4 Ds+ meson reconstruction
3.5 Efficiency and acceptance correction
3.5.1 Single track efficiency
3.5.2 HFT matching ratio
3.5.3 Particle identification cut efficiency
3.5.4 Reconstruction efficiency for Ds+ and D+
3.6 Systematic error
3.7 Results and Discussion
3.7.1 Ds+ and D+ ρΤ spectra
3.7.2 Ds+/D0 ratio
3.7.3 Discussion
Chapter 4 Measurement Ds+ meson elliptic flow in Au+Au collisions at √SNN=200 GeV
4.1 TMVA optimization
4.1.1 Signal and Background
4.1.2 Pre-seleetion for TMVA
4.1.3 Optimization results
4.2 Elliptic flow measurement
4.2.1 Event plane reconstruction
4.2.2 Event plane resolution
4.2.3 Hadron v2
4.3 Ds+ meson v2
4.4 Systematic error
4.5 Results and Discussion
Chapter 5 Approach to bottom decay electron v2 in Au+Au collision at √SNN=200 GeV
5.1 Methodology
5.2 Spectra and v2 measurement
5.2.2 B meson ρΤ spectra
5.2.3 Non-Photonic Electron elliptic flow measurement in A+A collisions
5.2.4 Bottom decay electron ratio in A+A collisions
5.3 D meson decay to electron elliptic flow
5.4 B meson decay to electron elliptic flow
5.4.1 Method 1:Direct approach
5.4.2 Method 2:Chi-square test
5.5 Discussion and Summary
Chapter 6 Summary and Outlook
6.1 Summary
6.2 Future upgrade program
6.2.1 The STAR HFT+ upgrade
6.2.2 The ALICE ITS upgrade
References
ACKNOWLEDGMENTS
Presentations and Publications List