منابع مشابه
Twin Higgs Model
We implement a one-loop analysis of the ρ parameter in the Left Right Twin Higgs model, including the logarithmically enhanced contributions from both fermion and scalar loops. Numerical results show that the one-loop contributions are dominant over the tree level corrections in most regions of parameter space. The experimentally allowed values of ρ-parameter divide the allowed parameter space ...
متن کاملTwin Higgs Asymmetric Dark Matter.
We study asymmetric dark matter (ADM) in the context of the minimal (fraternal) twin Higgs solution to the little hierarchy problem, with a twin sector with gauged SU(3)^{'}×SU(2)^{'}, a twin Higgs doublet, and only third-generation twin fermions. Naturalness requires the QCD^{'} scale Λ_{QCD}^{'}≃0.5-20 GeV, and that t^{'} is heavy. We focus on the light b^{'} quark regime, m_{b^{'}}≲Λ_{QCD}^...
متن کاملPair production of charged Higgs bosons in the left-right twin Higgs model at the ILC
Left-Right twin Higgs(LRTH) model predicts the existence of a pair of charged Higgs φ. In this paper, we study the production of the charged Higgs bosons pair φ via the process ee → φφ at the International Linear Collider(ILC). The numerical results show that the production cross section is at the level of several tens fb, and over 10 charged scalars events can be produced at the ILC each year....
متن کاملTwin - peak quasiperiodic oscillations as an internal resonance ( Research Note )
Aims. Two interrelated peaks occur in high-frequency power spectra of X-ray lightcurves of several black-hole candidates. We further explore the idea that a non-linear resonance mechanism, operating in strong-gravity regime, is responsible for these quasi-periodic oscillations (QPOs). Methods. By extending the multiple-scales analysis of Rebusco, we construct two-dimensional phase-space section...
متن کاملNatural Little Hierarchy from a Partially Goldstone Twin Higgs
We construct a simple theory in which the fine-tuning of the standard model is significantly reduced. Radiative corrections to the quadratic part of the scalar potential are constrained to be symmetric under a global U(4) × U(4)′ symmetry due to a discrete Z2 “twin” parity, while the quartic part does not possess this symmetry. As a consequence, when the global symmetry is broken the Higgs fiel...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2013
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2013.10.002