报告题目:The AMPT Model Updated with New nPDFs and Improved Heavy Flavor Productions
报告人:Zi-Wei Lin(East Carolina University and Central China Normal University)
报告时间:2019年8月13日(周二)上午10:00 化学西楼二楼
报告摘要:Recently we have updated the AMPT model with new PDFs in nuclei,
including the CTEQ6.1M parton distribution functions for the free
nucleon and the EPS09s spatial-dependent nuclear shadowing functions.
Motivated by saturation physics, we have introduced a nuclear scaling
of the minijet cutoff scale p0 to describe the overall multiplicities
in central AA collisions at high energies.
We have also improved heavy flavor productions in the AMPT model,
where, from the comparison with the open charm world data for pp
collisions, we find that the minijet cutoff p0 cannot be applied to
heavy flavors. Therefore the nuclear scaling of p0 is more consistent
with final-state saturation models such as EKRT rather than
initial-state saturation models such as CGC.
The string melting version of the updated AMPT model can describe
light flavor productions at low pT in pp collisions and high energy AA
collisions. In addition, it describes the open charm data much better
than before. This thus lays the foundation for simultaneous studies of
heavy flavors and light flavors within the AMPT transport approach.
报告人简历:
Education
Ph.D. Columbia University, New York, NY, USA, Physics, 1996
M.Phil. Columbia University, New York, NY, USA, 1994
M.S. Columbia University, New York, NY, USA, Physics, 1994
B.S. University of Science and Technology of China, Hefei, China, Theoretical Physics, 1991
Academic Employment
Guest Professor, Central China Normal University (June 2016 - Present), Wuhan, China.
Associate Professor, East Carolina University (August 2013 - Present), Greenville, NC.
Assistant Professor, East Carolina University (August 2007 - August 2013), Greenville, NC.
Research Scientist, University of Alabama in Huntsville / NASA Marshall Space Flight Center (December 2003 - August 2007), Huntsville, AL.
Postdoctoral Research Associate, The Ohio State University (October 2002 - November 2003), Columbus, OH.
Research Associate, Texas A & M University (October 1998 - September 2002), College Station, TX.
Postdoctoral Fellow, Lawrence Berkeley National Laboratory (October 1996 - September 1998), Berkeley, CA.
Honors and Awards
2013-2014: Scholar-Teacher Award. East Carolina University Scholar-Teachers for 2013-2014
2010-2011: Thomson Reuters ScienceWatch has selected our article, 'Multiphase transport model for relativistic heavy ion collisions' (Lin et al., Physical Review C 72, 064901, 2005), as a featured Research Front Map paper.
2006-2007: NASA Marshall Space Flight Center. NASA Group Achievement Award
2002-2003: The Institute for Nuclear Theory, University of Washington. Wine prize, best overall transport model for RHIC predictions
1989-1990: University of Science and Technology of China. Zhang Zong-Zhi Prize for Outstanding Academic Achievement