Type of Document Dissertation Author Zaballa, Robert Adrian Author's Email Address rzaballa1@student.gsu.edu URN etd-11192008-142332 Title Do R_{AA} and R_{CP} Quantify Nuclear Medium Effects? Degree Ph.D. Department Physics and Astronomy Advisory Committee
Advisor Name Title Dr. Xiaochun He Committee Chair Dr. A. G. Unil Perera Committee Member Dr. Murad Sarsour Committee Member Dr. Nikolaus Dietz Committee Member Dr. Richard Miller Committee Member Dr. Steven Manson Committee Member Keywords
- Heavy ion collisions
- p_T broadening
- Glauber model
- Hard scattering
- Incoherent binary nucleon-nucleon collisions
- Nuclear modification factors
Date of Defense 2008-11-11 Availability unrestricted Abstract With the use of an incoherent binary nucleon-nucleon collision model of heavy ion collisions for simulating particle production, it is demonstrated that the nuclear modification factors, R_{AA} and R_{CP}, are less than unity for hard scattering in the absence of any nuclear modification effects. The nuclear modification factor R_{dAu} is also shown to approach or exceed unity only if p_T broadening is taken into account. With a simple phenomenological parameter, the mean nucleon energy loss fraction, this model yields particle distributions that are comparable to those of experiment. The nuclear geometry is described by the Glauber model, and particle production is simulated by the PYTHIA event generator.Files
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