欢迎光临我们的网站！ 联系我们   |   设为首页
 首页 实验室概况 研究队伍 人才培养 科研成果 合作交流 科研资料共享 运行管理
 首页 > 新闻动态 > 学术活动 > 正文
 IOPP Forum： Dr. ZHOU You（周铀），10:00 am,Sept.7, Thursday, 2017 Time: 10:00 am,Sept. 7, Thursday, 2017 Location: Room 9409 Speaker: Dr. ZHOU You（周铀）, Niels Bohr Institute, University of Copenhagen Title: Novel constraints on the properties of the Quark-Gluon Plasma Abstract: The primary goal of the ultra-relativistic heavy-ion collision program at the Large Hadron Collider (LHC) is to study the properties of the Quark-Gluon Plasma (QGP), a state of strongly interacting matter that is proposed to exist at high temperatures and energy densities. Studies of azimuthal correlations of produced particles have contributed significantly to the characterization of the matter created in heavy-ion collisions. Anisotropic flow, which quantifies the anisotropy of the momentum distribution of final state particles, is sensitive to the event-byevent fluctuating initial geometry of the overlap region, together with the transport properties and the equation of state of the system. The successful description of the measured anisotropic flow coefficients by hydrodynamic calculations suggests that the created medium behaves as a nearly perfect fluid with a shear viscosity to entropy density ratio close to a conjectured lower bound $1/4\pi$. In this talk, I will present flow measurements in Pb--Pb collisions at $\sqrt{s_{\rm NN}} =$ 2.76 and 5.02 TeV at the LHC. The standard anisotropic flow coefficients, as well as the recently developed anisotropic flow observables, symmetric cumulants and non-linear modes of higher order anisotropic flow, will be iscussed in detail. These measurements, together with the comparisons to hydrodynamic calculations, help constrain the initial conditions and temperature dependence of the shear and bulk viscosities of the QGP, which were not very well constrained by previous measurements. These comparisons could also offer new insights into the geometry of the fluctuating initial state and further understanding of the dynamical evolution of the strongly interacting medium produced in relativistic heavy-ion collisions at the LHC. 上一篇：IOPP Seminar： Caio Prado，2:30pm，Sept.12, Tuesday, 2017 下一篇：IOPP Forum：Heng-Tong Ding，10:30am，July 18, 2017

 地址：湖北省武汉市珞喻路152号   Webmaster：liuchao@mail.ccnu.edu.cn 华中师范大学夸克与轻子物理教育部重点实验室