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HBT Radii and Transveres Momentum Relationship in RHIC Scanning Energy

Author: JiaXiang
Tutor: ZhangJingBo
School: Harbin Institute of Technology
Course: Particle Physics and Nuclear Physics
Keywords: HBT radii RHIC energies beam scanning Intensity interferometry Transverse momentum
CLC: O572.243
Type: Master's thesis
Year: 2011
Downloads: 17
Quote: 0
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Abstract


High energy heavy ion collisions major research in extreme high temperature, high -density conditions to produce a new form of matter - the quark-gluon plasma (QGP), and particle emission source structure and dynamics of spatial and temporal information is a prerequisite of QGP relevant information . Intensity interferometry , also known as Hanbury-Brown Twiss (HBT) effect, which is based on quantum mechanics identity principle , the use of emission source HBT temporal association can extract information and kinetic information , and because HBT correlation properties of some sub-stages are more sensitive parts can be a very good response to the Department of children hadron phase transition items , thus intensity interferometry is not only space-time structure of the particle emission source an important tool , but also verify the quantum chromodynamics (QCD) phase transition is important methods . This is an important paper work . In this paper, the relativistic quantum molecular dynamics model (RQMD) Analog Relativistic Heavy Ion Collider (RHIC) beam scanning energy region 2π space momentum correlation and HBT radii and transverse momentum dependence . By discussing the equation of state of nuclear matter - soft ‖ and - hard ‖ status can be seen, when the collision energy is higher when the average field on the particle effects can be ignored. Collision source generates π mesons There are many kinds of ways , in this paper mainly on a direct collision produced resonances decay of π mesons produced chord fragmentation analysis showed that the direct impact of π mesons produced the smallest source , which was mainly due to direct collisions π mesons produced initial direct collision source , carrying more collisions initial information source , other sources of π mesons are produced with the evolution of information sources , resulting in a greater radius HBT . Finally, the paper also discussed the RHIC beam scanning can freeze the area between the volume change was discussed .

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CLC: > Mathematical sciences and chemical > Physics > Nuclear physics,high energy physics > High-energy physics > Particle physics > Interaction > Strong interaction
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