--------------------------------------------------------------------
   COLLOQUIUM OF THE LABORATORY FOR COMPUTER DESIGN OF MATERIALS        
                   School of Computational Sciences	
                           (CSI 898-Sec 001) 
--------------------------------------------------------------------
                           The Split Personality of the Quark

                                       Simonetta Liuti
    Physics Department, University of Virginia, Charlottesville, VA

  The overwhelming body of data collected through the past three decades 
indicates that the proton and other sub-nuclear particles are composed 
of more fundamental objects, the quarks. The most stringent test is 
provided by scattering experiments of high energy electrons off proton 
targets, which show that the electrons that are scattered at large angles 
originate from the elastic collisions with light-spin 1/2 particles that 
move freely inside the proton. However, free quarks have not been discovered
and they are thought to be permanently confined inside the particles they 
compose. Understanding the "dual" nature of the free0yet-confineed quarks, 
is one of the challenging questions in QCD, the theory of strong interactions.

  Recent theoretical developments will be discussed along with experimental
investigations, aimed at pinning down the transition from (asymptotically)
free quarks and gluons to the onset of the still largely unknown confinement 
mechanism.
                                Monday , March 19, 2001
                                            4:30 pm
                               Room 206, Science & Tech. I

Refreshments will be served at 4:15 PM.
----------------------------------------------------------------------
Find the schedule at http://csi.gmu.edu/lcdm/seminar/schedule.html