2014/04/30 by Sebastian A. R. Ellis, Rohini M. Godbole, Shrihari Gopalakrishna +1 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1007/jhep09(2014)130
published as JHEP 1409 (2014) 130 · 43 pages, 17 figures; v2: text modified to improve readability, references added, journal version
arxiv created 2014/11/14 · arxiv updated 2014/11/17
With the renewed interest in vector-like fermion extensions of the Standard Model, we present here a study of multiple vector-like theories and their phenomenological implications. Our focus is mostly on minimal flavor conserving theories that couple the vector-like fermions to the SM gauge fields and mix only weakly with SM fermions so as to avoid flavor problems. We present calculations for precision electroweak and vector-like state decays, which are needed to investigate compatibility with currently known data. We investigate the impact of vector-like fermions on Higgs boson production and decay, including loop contributions, in a wide variety of vector-like extensions and their parameter spaces.