Title page for 87222010


[Back to Results | New Search]

Student Number 87222010
Author Chia-Ming Kuo(a)
Author's Email Address No Public.
Statistics This thesis had been viewed 1655 times. Download 551 times.
Department Physics
Year 2004
Semester 1
Degree Ph.D.
Type of Document Doctoral Dissertation
Language English
Title Transverse momentum and rapidity dependence of HBT correlations in Au+Au collisions at sqrt(s_NN) = 62.4 and 200 GeV with PHOBOS
Date of Defense 2004-09-20
Page Count 120
Keyword
  • HBT
  • heavy-ion physics
  • two-particle correlation
  • Abstract The relativistic heavy-ion collisions provide an opportunity to understand the behavior
    of strongly interacting matter at extremely high temperature and density. According to
    the recent experimental results from all four experiments at the Relativistic Heavy Ion
    Collider (RHIC) at the top RHIC energy, sqrtsNN = 200 GeV, it has been widely accepted
    that a very hot, dense, and possibly new state of matter have produced in central Au+Au
    collisions at RHIC. The space-time evolution of such collisions is great interest.
    The technique of Hanbury-Brown and Twiss (HBT) interferometry is extensively used to
    provide insight into the spatiotemporal dynamic evolution of the particle emitting
    source in heavy-ion collisions. The $mathcal{PHOBOS}$ experiment, consisting of a
    two-arm spectrometer constructed by silicon detectors, is being used to perform many
    interesting studies at RHIC.
    This thesis presents the measurement of two-particle correlations of identical charged
    pion pairs from Au+Au collisions at sqrtsNN = 62.4 and 200 GeV. Data for the 15\% most
    central events were analyzed with Bertsch-Pratt and Yano-Koonin-Podgoretskii
    parameterizations using pairs with rapidities of $0.4 < Y_{pipi} < 1.3$ and pair transverse
    momentum $0.1 < K_T < 1.4$ GeV/c. The Bertsch-Pratt radii $R_{out}$ and $R_{long}$ decrease
    as a function of pair transverse momentum, while $R_{side}$ appears to have a weaker
    dependence. $R_{out}$ and $R_{side}$ are independent of collision energy, while $R_{long}$
    shows a slight increase as compared with the results at lower energy. The source rapidity
    $Y_{YKP}$ scales roughly with the pair rapidity $Y_{pipi}$, indicating strong dynamical
    correlations.
    Table of Content Chapter 1 Introduction --- 1
    Chapter 2 The Experiment --- 8
    Chapter 3 A Review of HBT Correlations --- 27
    Chapter 4 Data Analysis --- 47
    Chapter 5 Results and Discussion --- 72
    Chapter 6 Conclusion --- 106
    Reference [1] T.D.Lee and G.C. Wick, PRD, 9 p2291, 1974
    [2] J.C. Collins and M.J. Perry, PRL, 34 p1353, 1975
    [3] E.V. Shuryak, PLB, 78 p150, 1978
    Advisor
  • Willis T. Lin(Lv)
  • Files
  • 87222010.pdf
  • approve immediately
    Date of Submission 2004-10-14

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have dissertation-related questions, please contact with the NCU library extension service section.
    Our service phone is (03)422-7151 Ext. 57407,E-mail is also welcomed.