KMI Mini-Workshop 2014

"Fluctuations, collectivity and correlations at RHIC and LHC"

October 23, 2014, Nagoya, Japan


Supported by
Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI)


  • Place : KMI Science Symposia (ES635, 6F), Engineering and Science Building


  • 14:00-14:50 Bjoern Schenke (BNL) pdf file
    Fluctuations, collectivity and correlations in high-energy nuclear collisions
    I present an overview of recent theoretical results on the azimuthal anisotropy of particle production in heavy ion and light-heavy ion collisions. I discuss the role of viscous fluid dynamics in describing the experimentally observed anisotropies and stress the importance of the initial state and its fluctuations. I will also discuss the role of initial state correlations in the color glass that are often neglected.

    15:10-16:00 Yasushi Nara (Akita International U) pdf file
    A CGC Monte-Carlo Event Generator for forward hadron productions
    Models based on the Color Glass Condensate (CGC) framework have been successful in explaining many experimental data from RHIC and LHC. However, in order to compare parton yeid in the CGC with the experimental data, one needs to assume hadron-parton duality for low pt hadrons or use fragmentation functions for high pt hadrons. In the case of QGP production, CGC+hydro approach gives us hadron spectra. In this talk, I will present some results from a newly developed Monte-Carlo event generator based on the CGC framework which is able to describe hadron distribution for all momentum region at forward rapidity (currently) in a single framework. Specifically, event generation is based on the DHJ formula which includes initial and final state radiations. Strings are formed by those produced partons and remnants, which are fragment into hadrons by the Lund string fragmentation model. Multiple scattering is also included based on the Eikonal formalism. We will show the comparison of our results to the forward hadron spectra including identified hadrons at RHIC and LHCf, and discuss mechanism of the particle production.

    16:20-17:10 Takahito Todoroki (Tsukuba U) pdf file
    Recent measurements of azimuthal anisotropy vn in high-energy heavy ion collisions
    We will present recent measurements of azimuthal anisotropy measurements in p(d)+A and A+A collisions at RHIC and LHC, and will discuss initial and final state effects for vn in p(d)+A collisions and scaling relation among vn in p(d)+A and A+A collisions. We also discuss event-shape engineering study for vn and vn-vm correlations in A+A collisions which may have an access to initial collision conditions.