2,200 research outputs found
Fourth SM Family Manifestations at CLIC
The latest electroweak precision data allow the existence of additional
chiral generations in the standard model. We study prospects of search for the
fourth standard model family fermions and quarkonia at and options of CLIC. It is shown that CLIC will be powerfull machine for
discovery and investigation of both fourth family leptons and quarkonia.
Moreover, the formation of the fourth family quarkonia will give a new
opportunity to investigate Higgs boson properties.Comment: 7 pages, 6 Table
The Fourth SM Family Neutrino at Future Linear Colliders
It is known that Flavor Democracy favors the existence of the fourth standard
model (SM) family. In order to give nonzero masses for the first three family
fermions Flavor Democracy has to be slightly broken. A parametrization for
democracy breaking, which gives the correct values for fundamental fermion
masses and, at the same time, predicts quark and lepton CKM matrices in a good
agreement with the experimental data, is proposed. The pair productions of the
fourth SM family Dirac and Majorana neutrinos at future
linear colliders with GeV, 1 TeV and 3 TeV are considered. The
cross section for the process
and the branching ratios for possible decay modes of the both neutrinos are
determined. The decays of the fourth family neutrinos into muon channels
provide cleanest signature at
colliders. Meanwhile, in our parametrization this channel is
dominant. bosons produced in decays of the fourth family neutrinos will be
seen in detector as either di-jets or isolated leptons. As an example we
consider the production of 200 GeV mass fourth family neutrinos at
GeV linear colliders by taking into account di-muon plus
four-jet events as signatures.Comment: 16 pages, 3 figures, 10 table
THE EFFECT OF MATHEMATICS TEACHER CANDIDATES’ LOCUS OF CONTROL ON MATH ANXIETY: STRUCTURAL EQUATION MODELING
In this study, the effect of mathematics teacher candidates’ locus of control on math anxiety was tested, along with the effects of gender, achievement and class level moderators. The study was carried out according to a causal design in which locus of control was taken as an independent variable, while math anxiety was taken as the dependent variable, and gender, achievement and class levels were considered as moderator variables. The participants were 402 students from three different state universities in Turkey who were selected using a combination of convenience and purposive sampling. Data were collected from the participants using the Locus of Control Scale (LCS) and the Math Anxiety Rating Scale-Short Version (MARS-SV). A path analysis was then used to provide a combination of measurement error in both latent and observed variables. The results of the path analysis revealed that the participants’ locus of control positively affected math anxiety. Furthermore, the moderator analysis showed that this effect was higher in males and in groups with lower achievement scores. Finally, a significant positive correlation was found between the external locus of control and the total and sub-scale scores of math anxiety. Article visualizations
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