中国科学院
近代物理所8月11日学术报告预告
文章来源:近代物理研究所     发布时间:2017-08-10

  报告题目:Fully Differential Study of Molecular Fragmentation in p + H2 Collisions 

  报告人:  Prof. Dr. Michael Schulz 

  Physics Department, Missouri University of Science and Technology, USA 

  时间:8月11日(星期五) 上午10:00  

  地点:中国科学院近代物理研究所5号楼911会议室 

  Michael Schulz  

  Education: 

  October 1987, Ph.D. (Physics), Thesis: "Capture with Simultaneous Excitation Studied by Two Photon Coincidences for S15+H2 Collisions", Advisor: Prof. Dr. R. Schuch, Universität Heidelberg 

  Academic experience: 

  Sep. 2002 – present, Professor, Department of Physics, Missouri University of Science & Technology, Rolla, MO 

  Aug. 2003 – present, Director of Laboratory for Atomic, Molecular, and Optical Research (LAMOR) at Missouri University of Science & Technology, Rolla, MO 

  Jan. 2006 – present, Curators’ Professor of Physics, Department of Physics, Missouri University of Science & Technology, Rolla, MO 

  Professional affiliation: 

  American Physical Society (Fellow) 

  Honors and awards (from 2011): 

  Fulbright Scholarship, 2011 

  Extreme Matter Institute (EMMI) Visiting Professor (declined in favor of Mercator Award), 2011 

  Deutsche Forschungs-Gemeinschaft Mercator Award, 2011 

  APS Outstanding Referee Award, 2013 

  Featured author in Journal of Physics +, August 14, 2015 

  Research activities: 

  102 Invited talks at national and international meetings 

  43 Invited seminar talks 

  1 Book 

  159 publications (130 in refereed journals, 8 invited review articles/book chapters, 18 in conference proceedings, 1 manuscript(s) accepted for publication in or submitted to refereed journal, 1 review article/book chapter submitted, 1 book review) 

  206 contributions at meetings 

 

  报告题目:gluo-dissociaton of heavy quarkonium and heavy baryon versus heavy meson ratio 

  报告人:Dr. Min He (何敏) 南京理工大学 

  时间安排:8月11日15:00         

  地点:中国科学院近代物理研究所5号楼1006会议室 

  报告摘要 

  Heavy quarks (open heavy flavor) and heavy quarkonia (hidden heavy flavor) are valuable probes of the hot medium created in relativistic heavy-ion collisions. This talk consists of two distinct works about hidden and open heavy flavor probes, respectively. In the first part, I will present our recent revisit to the gluo-dissociation of heavy quarkonia in the quark-gluon plasma. Within the theoretical framework of QCD multiple expansion, gluo-dissociaton cross secton of various charmonia and bottomonia are newly and systematically derived and evaluated using quantum mechanical perturabation method. Notable is the inclusion and evaluation of a new (chromo-magnetic dipole) mechanism of gluo-dissocation, in addition to the traditional chromo-electric dipole transtion. The contribution of the former to the charmonium dissocation rate turns out to be significant for $\J\psi$ dissociation at temperatures close to $T_{\rm pc}$. 

  In the second part of the talk, I will present our recent calculation of the heavy baryon ($\Lambda_c$) and the heavy meson ($D_0$) ratio at RHIC and LHC energies, using realistic charm quark and light quark spectra. We first calculate the various light baryon over meson ratio in the coalescence plus fragmentation model and reproduce the experimentally observed enhancement at intermediate pT. Gaining constraints on the model as well as the light quark spectra this way, we further calcualte the $\Lambda_c$ over $D_0$ ratio within the same framework, arguing it to be a sensitive measure of the degree of the charm quark thermaliztion. In particular, we will compare the results from instantaneous coalescence model and a resonance recombination model. 

附件下载:

地址:北京市三里河路52号 邮政编码:100864

© 1996 - 2017 中国科学院 版权所有 京ICP备05002857号

返回PC版