UV completions of partial compositeness: the case for a SU(4) gauge group
By G. Ferretti. 2014
148 citations recorded by the source corpus.
A bstractWe present a model of partial compositeness arising as the IR limit of a SU(4) gauge theory with only fermionic matter. This group is one of the most promising ones among a handful of possible choices allowing a symmetry breaking pattern incorporating custodial symmetry and a top partner candidate, while retaining asymptotic freedom. It is favored for not giving rise to lepto-quarks or Landau poles in the SM gauge couplings. The minimal UV theory consists of five hyperfermions in the anti-symmetric representation and three in the fundamental and anti-fundamental. The IR theory is centered around the coset SU(5)/SO(5), with top partners in the fundamental of SO(5), giving rise to one composite fermion of electric charge 5/3, three of charge 2/3 and one of charge −1/3. Electro-Weak symmetry breaking occurs via top-quark-driven vacuum misalignment. The top quark mass is generated via the mechanism of partial compositeness, while the remaining fermions acquire a mass via a standard quadratic coupling to the Higgs. We compute the top and bottom quark mass matrix and the Electro-Weak currents of the composite fermions. The model does not give rise to unacceptably large deviations from the SM Z → bb¯$$ b\overline{b} $$ decay width.
Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/3fca3404d78bf31dec82d95d6de46e88c481e724
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In Atomic and Molecular Physics, and Optics
- Gudrun Heinrich
- Thomas Gehrmann
- E. Glover
- M. Grazzini
- A. Ferroglia
- Stefan Kallweit
- M. Wiesemann
- Michal Czakon
In Nuclear and High Energy Physics
- Gudrun Heinrich
- Cms Collaboration
- Atlas Collaboration
- Ansgar Denner
- Stefan Kallweit
- Stefan Dittmaier
- M. Grazzini
- Juan Rojo
Citations in the corpus
- Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, result): “We present results for two of the twelve models [628, 629], denoted respectively M6 and M8 in Ref.”
- Addressing the B-physics anomalies in a fundamental Composite Higgs model (2018, background): “[65, 67, 68, 70] also require partial compositeness for SM fermions via a linear mixing with HC-baryons.”