### Session Y1: New Physics at Colliders

 Tuesday, April 19, 2005 1:30PM - 2:06PM Y1.00001: New physics at the Tevatron Invited Speaker: Tim Tait Tuesday, April 19, 2005 2:06PM - 2:42PM Y1.00002: Search for Exotic Particles and Extra Dimensions at the Tevatron Invited Speaker: Sharon Hagopian We report on searches for exotic particles, such as leptoquarks, massive stable particles, and new heavy gauge bosons (Z') in $p\bar{p}$ collisions at sqrt(s) = 1.96 {\rm TeV} using data collected by the D\O\ and CDF experiments during 2002-2004 at the Fermilab Tevatron. The data is also studied for evidence of extra dimensions. Results of several searches will be presented. Tuesday, April 19, 2005 2:42PM - 3:18PM Y1.00003: Searches for Supersymmetry and other Physics beyond the Standard Model at the Tevatron Invited Speaker: Peter Wittich Despite the extraordinary accuracy of its predictions, the Standard Model of Particle Physics suffers from a number of unsolved problems, such as the hierarchy problem. Here, We report on searches for physics beyond the Standard Model, focusing on searches for evidence for Supersymmetry, in p$\bar{p}$ collisions at $\sqrt{s}$=1.96~TeV using data collected by the D0 and CDF collaborations in the Run 2 phase of the Tevatron program.