Results 1 to 10 of about 1,339 (163)
Unification with vector-like fermions and signals at LHC [PDF]
Journal of High Energy Physics, 2018 We look for minimal extensions of Standard Model with vector like fermions leading to precision unification of gauge couplings. Constraints from proton decay, Higgs stability and perturbativity are considered.
Biplob Bhattacherjee +3 more
doaj +3 more sources
Collider signatures of vector-like fermions from a flavor symmetric model [PDF]
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 +4 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 +5 more sources
Road map through the desert: unification with vector-like fermions [PDF]
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 +3 more sources
The Interplay of Magnetic Order with the Electronic Scattering and Crystal‐Field Effects in a Metallic Ferromagnet [PDF]
Advanced Science, Volume 13, Issue 13, 3 March 2026.The interplay between magnetic ordering and crystal electric field (CEF) excitations plays a pivotal role in defining the low‐energy electrodynamics of quantum materials. By probing the temperature‐dependent THz conductivity in a rare‐earth‐based metallic ferromagnet, we uncover a microscopic connection between localized and itinerant electrons ...
Payel Shee +11 more
wiley +2 more sources
W boson mass and grand unification via the type-II seesaw-like mechanism
Nuclear Physics B, 2023 We propose an SU(5) GUT model extended with two additional pairs of 10 representation vector-like fermions. The CDF collaboration W boson mass anomaly is explained by using the VEV of a real SU(2)L triplet scalar coming from the 24 representation Higgs ...
Yusuke Shimizu, Shonosuke Takeshita
doaj +1 more source
Electroweak precision constraints on vector-like fermions [PDF]
The European Physical Journal C, 2008 We calculate the oblique electroweak corrections and confront with the experiments in an extension of the Standard Model. The new fields added are a vector-like weak doublet and a singlet fermion. After electroweak symmetry breaking there is a mixing between the components of the new fields, but no mixing allowed with the standard fermions.
Cynolter, G, Lendvai, E
openaire +3 more sources
SU(5) × U(1)′ Models with a Vector-like Fermion Family [PDF]
Universe, 2021 Motivated by experimental measurements indicating deviations from the Standard Model predictions, we discuss F-theory-inspired models, which, in addition to the three chiral generations, contain a vector-like complete fermion family. The analysis takes place in the context of SU(5)×U(1)′ GUT embedded in an E8 covering group, which is associated with ...
A. Karozas +2 more
openaire +2 more sources
Road map through the desert with scalars
Journal of High Energy Physics, 2022 In the context of the gauge coupling unification, we present a comprehensive analysis of the extensions of the Standard Model with vector-like fermions and scalars.
Ubaldo Cavazos Olivas +2 more
doaj +1 more source
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. There are 11 models where the vector-like fermions Yukawa couple to the standard model fermions via the Higgs field. These models do not introduce additional fine- tunings.
Ishiwata, Koji +2 more
openaire +4 more sources