Results 11 to 20 of about 96,912 (161)
New Vector-Like Fermions and Flavor Physics [PDF]
Journal of High Energy Physics, 2015 We study renormalizable extensions of the standard model that contain vector-like fermions in a (single) complex representation of the standard model gauge group.
Ishiwata, Koji +2 more
core +6 more sources
Collider signatures of vector-like fermions from a flavor symmetric model
Journal of High Energy Physics, 2022 We propose a model with two Higgs doublets and several SU(2) scalar singlets with a global non-Abelian flavor symmetry Q 6 × Z 2 $$ {\mathcal{Q}}_6\times {\mathcal{Z}}_2 $$ .
Cesar Bonilla +5 more
doaj +2 more sources
Journal of High Energy Physics, 2014 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
Ellis, Sebastian A. R. +3 more
core +3 more sources
Relic challenges for vector-like fermions as connectors to a dark sector
Journal of High Energy Physics, 2023 New dark sectors consisting of exotic fields that couple only very feebly to the Standard Model (SM) have strong theoretical motivation and may be relevant to explaining the abundance of dark matter (DM).
Alexandre Carvunis +2 more
doaj +2 more sources
Pseudoscalar Portal Dark Matter and New Signatures of Vector-like Fermions
Journal of High Energy Physics, 2016 Fermionic dark matter interacting with the Standard Model sector through a pseudoscalar portal could evade the direct detection constraints while preserving a WIMP miracle.
Fan, JiJi +2 more
core +3 more sources
Road map through the desert: unification with vector-like fermions
Journal of High Energy Physics, 2019 In light of null results from New Physics searches at the LHC, we look at unification of the gauge couplings as a model-building principle. As a first step, we consider extensions of the Standard Model with vector-like fermions.
Kamila Kowalska, Dinesh Kumar
doaj +2 more sources
Top Partners and Higgs Boson Production [PDF]
, 2014 The Higgs boson is produced at the LHC through gluon fusion at roughly the Standard Model rate. New colored fermions, which can contribute to $gg\rightarrow h$, must have vector-like interactions in order not to be in conflict with the experimentally ...
Chen, Chien-Yi, Dawson, S., Lewis, I. M.
core +2 more sources
Integrating out new fermions at one loop
Journal of High Energy Physics, 2021 We present the fermionic universal one-loop effective action obtained by integrating out heavy vector-like fermions at one loop using functional techniques. Even though previous approaches are able to handle integrating out heavy fermions with non-chiral
Andrei Angelescu, Peisi Huang
doaj +1 more source
Partial compositeness under precision scrutiny
Journal of High Energy Physics, 2022 We revisit the impact of top partial compositeness on electroweak precision observables in the misaligned vacuum basis. We identify a new source for S in the singlet mixing case, and for S-T in the bi-doublet mixing, stemming from misalignment in the ...
Haiying Cai, Giacomo Cacciapaglia
doaj +1 more source
Natural Top-Bottom Mass Hierarchy in Composite Higgs Models [PDF]
, 2020 We consider composite two-Higgs doublet models based on gauge-Yukawa theories with strongly interacting fermions generating the top-bottom mass hierarchy.
Hill, Christopher T., Rosenlyst, Martin
core +2 more sources