Results 21 to 30 of about 4,905 (126)
Testing a dynamical origin of Standard Model fermion masses [PDF]
, 2016 We discuss a test of the Standard Model fermion mass origin in models of dynamical electroweak symmetry breaking. The couplings of composite pseudoscalar resonances to top quarks allow to distinguish high-scale Extended-Technicolor-type fermion mass ...
Alanne, Tommi +2 more
core +2 more sources
Journal of High Energy Physics, 2017 Higgs boson compositeness is a phenomenologically viable scenario addressing the hierarchy problem. In minimal models, the Higgs boson is the only degree of freedom of the strong sector below the strong interaction scale.
Mikael Chala +4 more
doaj +1 more source
$SU(2)$ Gauge Theory with Two Fundamental Flavours: Scalar and Pseudoscalar Spectrum [PDF]
, 2016 We investigate the scalar and pseudoscalar spectrum of the $SU(2)$ gauge theory with $N_f=2$ flavours of fermions in the fundamental representation using non perturbative lattice simulations.
Arthur, Rudy +4 more
core +3 more sources
Journal of High Energy Physics, 2018 Many composite Higgs models predict the existence of vector-like quarks with masses outside the reach of the LHC, e.g. m Q ≳ 2 TeV, in particular if these models contain a dark matter candidate.
Mikael Chala +2 more
doaj +1 more source
The W boson mass weighs in on the non-standard Higgs
Physics Letters B, 2022 We consider the implications of the CDF collaboration high-precision measurement of the W boson mass on models with a non-standard Higgs. We show that this requires an enhancement of more than 5% in the non-standard Higgs coupling to the gauge bosons ...
Giacomo Cacciapaglia, Francesco Sannino
doaj +1 more source
Ultra Minimal Technicolor and its Dark Matter TIMP [PDF]
, 2008 We introduce an explicit model with technifermion matter transforming according to multiple representations of the underlying technicolor gauge group. The model features simultaneously the smallest possible value of the naive S parameter and the smallest
Ryttov, Thomas A., Sannino, Francesco
core +2 more sources
A partially composite Goldstone Higgs [PDF]
, 2017 We consider a model of dynamical electroweak symmetry breaking with a partially composite Goldstone Higgs. The model is based on a strongly-interacting fermionic sector coupled to a fundamental scalar sector via Yukawa interactions.
Alanne, Tommi +2 more
core +3 more sources
Electroweak symmetry breaking and collider signatures in the next-to-minimal composite Higgs model
Journal of High Energy Physics, 2017 We conduct a detailed numerical analysis of the composite pseudo-Nambu-Goldstone Higgs model based on the next-to-minimal coset SO(6)/SO(5) ≅ SU(4)/Sp(4), featuring an additional SM singlet scalar in the spectrum, which we allow to mix with the Higgs ...
Christoph Niehoff +2 more
doaj +1 more source
Composite Higgs to two Photons and Gluons [PDF]
, 2011 We introduce a simple framework to estimate the composite Higgs boson coupling to two-photon in Technicolor extensions of the standard model. The same framework allows us to predict the composite Higgs to two-gluon process.
Alwall J. +6 more
core +2 more sources
The LHC potential of vector-like quark doublets
Journal of High Energy Physics, 2018 The existence of new vector-like quarks is often predicted by models of new physics beyond the Standard Model, and the development of discovery strategies at colliders is the object of an intense effort from the high-energy community.
Giacomo Cacciapaglia +5 more
doaj +1 more source