Speaker
Prof.
Robin Erbacher
(Univ. of California, Davis)
Description
Fifteen years following the first glimpses of the top quark at Fermilab's Tevatron, physicists are now able to explore top quark physics with substantial precision. With 40 times the data of Run 1, we are learning much about the nature of this peculiarly heavy quark, and we are looking for hints of physics beyond the Standard Model in the top quark sector. We present exciting new results on searches for new physics in the top quark sector at CDF, in which we constrain possibilities for new physics mimicking top quarks in our data sample, and look for anomalous top quark properties. In particular we set limits on the production of of a 4th generation top-like quark, which also constrains models such as little Higgs with T-parity, Beautiful Mirrors, and massive KK gluons. Constraints from baryogenesis indicate that SUSY stop could be lighter than the top quark. Such stop signatures can be very similar to those from top events, and we place the first limits on these signatures. In addition, we present searches for resonant top production, as well as a measurement of the top quark forward-backward asymmetry, which is a test of discrete symmetries and strong interactions at large Q^2, and use this to search for massive Z'-like bosons or axi-gluons. Some of these new results are tantalizing, and indicate that the Tevatron data are as interesting as ever.
Primary author
Prof.
Robin Erbacher
(Univ. of California, Davis)
Co-author
The CDF Collaboration
(Fermilab)
