Search results for "Left handed"
showing 6 items of 6 documents
Left-handed neutrino disappearance probe of neutrino mass and character
1996
We explore the sensitivity to a non vanishing neutrino mass offered by dynamical observables, i.e., branching ratios and polarizations. The longitudinal polarization in the C.M. frame decreases by a 4% for $D^+ \rightarrow \tau^+ \nu_\tau$ and $m_{\nu_\tau}=24$ MeV. Taking advantage of the fact that the polarization is a Lorentz variant quantity, we study the polarization effects in a boosted frame. By means of a neutrino beam, produced by a high velocity boosted parent able to flip the neutrino helicity, we find that an enhanced left-handed neutrino deficit, induced by a Wigner rotation, appears.
Effect of Handedness on Mental Rotation
2018
The impact of the dominant hand on the response time and precision in mental rotational tasks seems to be controversial. The goal of this study was to compare the differences in response times of mental rotation tasks when the task is performed with the dominant or non-dominant hand. In this study, 44 right-handers and 45 left-handers participated in mental rotation tests with 2-D and 3-D figures. Findings indicate that the right-handers had shorter response times than left-handers in tests with both types of figures.
Predictive discrete dark matter model and neutrino oscillations
2012
Dark Matter stability can be achieved through a partial breaking of a flavor symmetry. In this framework we propose a type-II seesaw model where left-handed matter transforms nontrivially under the flavor group Delta(54), providing correlations between neutrino oscillation parameters, consistent with the recent Daya-Bay and RENO reactor angle measurements, as well as lower bounds for neutrinoless double beta decay. The dark matter phenomenology is provided by a Higgs-portal.
Decoupling or nondecoupling: Is that theRbquestion?
1996
The top quark is well known for the nondecoupling effects it implies in ρ and Rb. The recent experimental Rb data exhibits a disagreement with the SM prediction at more than the 3σ level. It is tempting to explore whether this might be due to nondecoupling New Physics effects, opposite to those of the top. We investigate this issue in the context of models with an extra family of right or left handed, singlet or doublet quarks. It is shown that, contrary to what
Wrong Hand, Wrong Children? The Education of Left-Handed Children in Soviet Latvia
2019
Left-handers have always been surrounded by stigma and controversy, and attitudes toward this group have always been rooted in the ideas and traditions of power relations existing in a given society. Thus, the goal of this study is to describe the retraining of left-handers as it was conducted in Soviet education. The impact of political power on an individual’s body-mind interaction is a significant problem in research on the creation of the “New Soviet Man.” The teaching of left-handed children in the Soviet Union is a noteworthy example of the totalitarian regime’s illusionary endeavors to change human nature. The Soviet education envisaged neither a special attitude nor any particular p…
Posterior interosseous nerve of the elbow at the arcade of Frohse: Ultrasound appearance in asymptomatic subjects
2019
PURPOSE To assess the normal values of the antero-posterior (AP) diameter of the posterior interosseous nerve (PIN) of the elbow as it passes beneath the arcade of Frohse and to search for PIN-diameter differences between the upstream, entry point and downstream of the arcade. MATERIAL AND METHODS Thirty asymptomatic patients prospectively underwent bilateral B-mode ultrasound of the PIN of the elbow. There were 15 men and 15 women with a mean age of 30.2±5.31 (SD) years (range: 26-43 years). Of these, 23 patients were right-handers (23/30; 77%) and 7 were left handers (7/30; 23%). AP diameter of the PIN was measured in long axis at three different locations including the entry point of the…