João Paulo Silva

Large pseudoscalar Yukawa couplings in the complex 2HDM

A bstractWe start by presenting the current status of a complex flavour conserving two-Higgs doublet model. We will focus on some very interesting scenarios where unexpectedly the light Higgs couplings to leptons and to b-quarks can have a large pseudoscalar component with a vanishing scalar component. Predictions for the allowed parameter space at end of the next run with a total collected luminosity of 300 fb−1 and 3000 fb−1 are also discussed. These scenarios are not excluded by present data and most probably will survive the next LHC run. However, a measurement of the mixing angle ϕτ , between the scalar and pseudoscalar component of the 125 GeV Higgs, in the decay h → τ +τ − will be able to probe many of these scenarios, even with low luminosity. Similarly, a measurement of ϕt in the vertex t¯th

A RESOURCE FOR SIGNS AND FEYNMAN DIAGRAMS OF THE STANDARD MODEL

\overline{t}th

Disentangling violations of CPT from other new physics effects

could help to constrain the low tan β region in the Type I model.

Baryogenesis through split Higgsogenesis

Abstract Spatial information analysis and handling requires the use of three cognitive spaces: haptic, pictorial and transperceptual. Geographical information systems interfaces do not yet integrate these three spaces in the same working environment. We present an interface designed to integrate the three cognitive spaces: The Virtual GIS Room — an interface solution for geographical information systems users, using popular tools such as digitizing tablets and mice (or pens) along with position and orientation sensors and head mounted displays, more popular in typical virtual environments. The use of immersive virtual environments as an add-on to traditional geographical information systems enhances the user ability to explore and visualize data, providing the transperceptual space missing in the usual desktop metaphor.

Distance to international border shapes the distribution pattern of the growing Little Bustard Tetrax tetrax winter population in Northern Iran

When performing a full calculation within the standard model (SM) or its extensions, it is crucial that one utilizes a consistent set of signs for the gauge couplings and gauge fields. Unfortunately, the literature is plagued with differing signs and notations. We present all SM Feynman rules, including ghosts, in a convention-independent notation, and we table the conventions in close to 40 books and reviews.

Proposed power transmission lines in Cambodia constitute a significant new threat to the largest population of the Critically Endangered Bengal florican Houbaropsis bengalensis

To study a flavour model with a non-minimal Higgs sector one must first define the symmetries of the fields; then identify what types of vacua exist and how they may break the symmetries; and finally determine whether the remnant symmetries are compatible with the experimental data. Here we address all these issues in the context of flavour models with any number of Higgs doublets. We stress the importance of analysing the Higgs vacuum expectation values that are pseudo-invariant under the generators of all subgroups. It is shown that the only way of obtaining a physical CKM mixing matrix and, simultaneously, non-degenerate and non-zero quark masses is requiring the vacuum expectation values of the Higgs fields to break completely the full flavour group, except possibly for some symmetry belonging to baryon number. The application of this technique to some illustrative examples, such as the flavour groups

Spatial organization and social relations in a reintroduced population of Endangered Iberian lynx Lynx pardinus

\Delta (27)