arXiv subjects

Irene Hidalgo

Publications and source records attributed to Irene Hidalgo.

2 recordsLinked to original sources

arXiv2007

Neutrinos and Lepton Flavour Violation in the Left-Right Twin Higgs Model

We analyse the lepton sector of the Left-Right Twin Higgs Model. This model offers an alternative way to solve the "little hierarchy" problem of the Standard Model. We show that one can achieve an effective see-saw to explain the origin of neutrino masses and that this model can accommodate the observed neutrino masses and mixings. We have also studied the lepton flavour violation process l_1 -> l_2 γand discussed how the experimental bound from these branching ratios constrains the scale of symmetry breaking of this Twin Higgs model.

hep-ph↗

arXiv2005

The Fine-Tuning Problem in Little Higgs Models

Little Higgs models represent an alternative to Supersymmetry as a solution to the Hierarchy Problem. After introducing the main physical ideas of these models, we present the fine-tuning associated to the electroweak breaking in Little Higgs scenarios. Taking into account the most general properties of this scenarios and focusing on two representative ``Little Higgs'' models, we find that the fine-tuning is much higher than suggested by the rough estimates usually made. The main sources that increase the fine-tuning in these models are identified, then they can be taken into account in order to construct a successful model.

hep-ph↗