The quest for top partners at the LHC

Note: Time: 3:30 PM...... Refreshments served
Speaker: Tobias Golling, Yale University

When: October 31, 2013 (Thu), 03:30PM to 04:30PM (add to my calendar)
Location: PRB 595
Hosted by: Tulika Bose

This event is part of the HEE Seminar Series.

Abstract: Not only has the Higgs discovery established the LHC as a discovery machine, a light Higgs also manifests the so-called hierarchy or naturalness problem - the striking incompatibility between the electroweak (EW) scale of the observed Higgs boson mass and the natural mass scale of the Higgs boson, the Planck scale. The most common extensions of the SM are designed to address this hierarchy problem by introducing new physics at the TeV scale, which most importantly is in reach of the LHC. The main destabilization of the EW scale comes from a top-quark loop. Thus, the key to addressing the naturalness problem is to search for light ”top partners” that, due to some symmetry mechanism, precisely cancel the top quantum quadratic divergence. I will discuss the ATLAS searches for these top partners.