Top quark couplings: challenging the Standard Model
by
DrMaria Moreno Llacer
→
Europe/Berlin
MPI Meeting rooms
MPI Meeting rooms
Description
The top quark is unique among the known quarks since it decays before it has an opportunity to form hadronic bound states. This makes measurements of its properties particularly interesting as one can access directly the properties of a bare quark. Given its large mass (the heaviest fundamental particle), the top quark may play a special role in the electroweak symmetry breaking (EWSB) and therefore, new physics related to EWSB may be found first in top quark precision measurements. Possible new physics signals would cause deviations of the top quark couplings from the Standard Model (SM) prediction. It couples to the SM fields through its gauge and Yukawa interactions. Some of these couplings were investigated at the Tevatron, through studies of the Wtb vertex and the top quark pair (tt) production, while others, such as the tt+photon, tt+Z and tt+H production, are becoming accessible only with the high statistics top quark sample at the LHC. The latest measurements of these properties at the LHC will be presented.
