The velocity structure of relativistic nuclear collisions

		   	     Tom Trainor
	Center for Nuclear Physics and Astrophysics
		     University of Washington


I will describe results from recently-developed analysis techniques 
which reveal novel aspects of velocity structure in relativistic p-p 
and Au-Au collisions at RHIC. Two-particle correlations on transverse 
rapidity yt in p-p collisions contain parton fragment correlations 
comparable to string fragmentation structure on longitudinal rapidity 
yz. ytxyt correlations reveal well-defined jet structure from 
minimum-bias partons down to hadron pt = 0.5 GeV/c and below. pt 
autocorrelations on pseudorapidity and azimuth derived from <pt> 
fluctuation inversion also reveal jets as velocity structures in Au-Au 
collisions, representing not only direct parton fragments but also the 
responding velocity distribution of the bulk medium. Evolution of jet 
structure with Au-Au collision centrality suggests strong coupling of 
low-pt partons to a longitudinally expanding colored medium in the more 
central collisions.