One puzzle of neutrino masses and mixings is that they do not exhibit the kind of strong “hierarchy” that is found for the quarks and charged leptons. Neutrino mass ratios and mixing angles are not small. A possible reason for this is proposed here. It is based on the fact that typical realistic grand unified models contain particles with unification-scale masses which, when integrated out, can...

Recent considerations by these authors pointed out the attractive features which a search for the exchange of heavy Majorana neutrinos could have for solving the mass and the lepton number puzzles for all neutrinos, in TeV-level electron-electron scattering. In the present note, we show that, contrary to subsequently published arguments, non-observation of neutrinoless double beta decay has, to...

Based on dielectric resonators, the design and implementation of planar left-handed metamaterials made of dielectric blocks are investigated in this paper. By etching simple metallic patterns on surface of the dielectric blocks, field distributions of the desired resonance modes can be enhanced while those of the undesired are suppressed. In this way, the resonance frequency of the desired mode...

The study of perturbative superstring spectra indicates that there must exist a so-called Type IIB supergravity as the low energy limit of type IIB superstring in addition to the well-known type IIA supergravity. This theory has two spacetime supersymmetries with the same handedness and is therefore chiral. The field content for this theory (in the real basis) consists of the metric gμν , a 2-f...

The perfect lens property of a dispersive and lossy lefthanded metamaterial disk is exploited to superimpose a source of electromagnetic radiation onto its mirror image, formed as a result of reflection from a perfect electric conductor or a perfect magnetic conductor. The superposition of a vertical wire-dipole antenna with its perfect electric conductor image results in an increase of the rad...

Some studies reported decreased longevity in left-handed individuals as compared with right-handed individuals without a clear underlying explanation. We examined the unexplored relationship between handedness and type 2 diabetes (T2D) among 65,732 women from the prospective Etude Epidémiologique auprès de Femmes de la Mutuelle Générale de l’Education Nationale (E3N) cohort study (1) between 19...

A novel structure of dual-composite right/lefthanded transmission line (D-CRLH TL) is proposed and analyzed in this paper. The simulated results show that there is a stopband between the first right-handed passband and the left-handed passband of the proposed D-CRLH TL. This stopband characteristic is applied to improve the electromagnetic performances of low-pass filter (LPF). A planar compact...

If future neutrino oscillation experiments show that the neutrino mass spectrum is with normal ordering, m1 < m2 < m3, and the searches for neutrinoless double beta ((ββ)0ν -) decay with sensitivity to values of the effective Majorana mass || ∼> 10 −2 eV give negative results, the next frontier in the quest for (ββ)0ν -decay will correspond to || ∼ 10−3 eV. Assuming that massive neutrinos...

Background: The left hippocampus is believed to play an important role in memory function. Thus, left hippocampectomy should be carefully performed. However, the left hippocampus may be less important for memory in patients with right hemisphere language dominance. We performed left hippocampectomy in a patient with epilepsy and right hemisphere language dominance. Here we present the findings ...

In this article, a novel simplified dual-composite right/lefthanded transmission line (S-D-CRLH-TL) is proposed according to the theory of dual-composite right/left-handed transmission line. The electromagnetic characteristics of S-D-CRLH-TL are analyzed by simulator, and the results indicate that the proposed structure has two narrow stopbands; they can be controlled by changing the geometry p...