Theorie-Palaver
June 25, 2015 at 2:30 p.m. in THEP SozialraumUpalaparna Banerjee
Federico Gasparotto
Pouria Mazloumi
Yong Xu
Composite Higgs models provide a viable solution to the hierarchy problem. The masses for quarks are typically realized via linear mixing of the chiral elementary quarks with TeV scale vector-like fermion resonances from the strongly coupled sector. These resonances can be searched for at the LHC, and we present results on several new search strategies for heavy vector-like quark partners which can be applied at the early stages of the LHC run-II.
The mixing of elementary quarks with vector-like quark partners induces the couplings tested in direct production and decays of quark partners, but it can also induce large flavor violation, such that additional assumptions on the flavor structure of the model are required. In the second part of the talk we present first results on a new attempt to avoid the flavor problem, in which only a composite partner of the top quark is present at low energies.
Based on: arXiv:1409.0409, 1410.8131, 1501.03818, 1501.07456, , and work in progress.