Investigations of electroweak symmetry breaking mechanism for Higgs boson decays into four fermions

Models with extended Higgs boson sectors are of prime importance for investigating the mechanism of electroweak symmetry breaking for Higgs decays into four fermions and for Higgs-production in association with a vector bosons. In the framework of the Two-Higgs-Doublet Model using two scenarios obtained from the experimental measurements we presented next-to-leading-order results on the four-fermion decays of light CP-even Higgs boson, $h \rightarrow 4f$. With the help of Monte Carlo program Prophecy 4f 3.0, we calculated the values $\Gamma= \Gamma_{EW} /\left(\Gamma_{EW}+\Gamma_{SM}\right)$ and $\Gamma= \Gamma_{EW+QCD} /\left(\Gamma_{EW+QCD}+\Gamma_{SM}\right)$ for Higgs boson decay channels $H \rightarrow \nu_{\mu} \overline{\mu} e \overline{\nu_e}$, $\mu \overline{\mu} e \overline{e}$, $e \overline{e} e \overline{e}$. We didn't find significant difference when accounting QCD corrections to EW processes in the decay modes of Higgs boson. Using computer programs Pythia 8.2 and FeynHiggs we calculated the following values: $\sigma(VBH)BR(H\rightarrow ZZ)$ and $\sigma(VBF)BR(H \rightarrow WW)$ for VBF production processes, $\sigma(ggH)BR(H \rightarrow WW)$ and $\sigma(ggH)BR(H \rightarrow ZZ)$ for gluon fusion production process at 13 and 14 TeV and found good agreement with experimental data.Comment: 4 pages, 2 figure

Studying the resonance production cross-section of the heavy vectors within Heavy Vector Triplet model

In the context of TeV-scale extensions of the Standard Model both the experimental searches and the construction of phenomenological models for the new heavy bosons searches are used by us. Heavy particles predicted by a the Simplified Model constructed to describe only the on-shell resonance, have to be compared with LHC data. Heavy bosons have certain properties that can be calculated within the Heavy Vector Triplet model using the MadGraph computer program. We have calculated the production cross sections of heavy particles using the experimental constraints in the parameter space ($c_H$, $c_F$) imposed on the benchmark scenario. The nature of the functional dependence of the cross section at the basic parameters of the model on the mass of the new boson, as well as the mechanism for the heavy particle production is studied.Comment: 9 pages, 9 figure

Landscape phage, phage display, stripped phage, biosensors, detection, affinity reagent, nanotechnology, Salmonella typhimurium, Bacillus anthracis

Filamentous phage, such as fd used in this study, are thread-shaped bacterial viruses. Their outer coat is a tube formed by thousands equal copies of the major coat protein pVIII. We constructed libraries of random peptides fused to all pVIII domains and selected phages that act as probes specific for a panel of test antigens and biological threat agents. Because the viral carrier is infective, phage borne bio-selective probes can be cloned individually and propagated indefinitely without needs of their chemical synthesis or reconstructing. We demonstrated the feasibility of using landscape phages and their stripped fusion proteins as new bioselective materials that combine unique characteristics of affinity reagents and self assembling membrane proteins. Biorecognition layers fabricated from phage-derived probes bind biological agents and generate detectable signals. The performance of phage-derived materials as biorecognition films was illustrated by detection of streptavidin-coated beads, Bacillus anthracis spores and Salmonella typhimurium cells. With further refinement, the phage-derived analytical platforms for detecting and monitoring of numerous threat agents may be developed, since the biodetector films may be obtained from landscape phages selected against any bacteria, virus or toxin. As elements of field-use detectors, they are superior to antibodies, since they are inexpensive, highly specific and strong binders, resistant to high temperatures and environmental stresses.Comment: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions

ДО ПРОБЛЕМИ ХАРАКТЕРИСТИКИ ФОРМ ОЦІНЮВАННЯ ЕФЕКТИВНОСТІ ДІЯЛЬНОСТІ СУДІВ

It has been proved that evaluation is an extremely important tool for controlling the activities of courts. Its special significance is that it allows to obtain content and fundamental data on the level of quality, efficiency and effectiveness of the court activities without direct interference into its activities on administration of justice. That is, by providing relevant information on the activities of the court, the assessment contributes to the observance of its independence as a judicial agency. It has been determined that due to the evaluation it is possible not only to establish the degree of conformity of the qualitative and quantitative indicators of the court’s activities with the established legal requirements and public expectations and requests, but also to detect the problematic aspects of the courts activities; to provide a more rational and effective approach to allocating resources, including personnel, to specify, prioritize and improve the work of the court and judges more precisely and clearly. At the same time it has been noted that the assessment concerns only the organizational and managerial aspects of the work of the court and does not provide the verification of the efficiency and effectiveness directly of the just activities of judges of the court (courts). It has been established that the evaluation of the court activity is carried out mainly in the forms of questioning (external and internal) and the study of reporting and other documents containing statistics on the work of courts. Their analysis has been accomplished; and propositions for their improvement have been provided. It has been stressed that the existing system of assessing the work of the court is very informative and contains almost all indicators, forms and methods necessary for obtaining reliable data about the activity of judicial agencies, including those that administer justice. At the same time, the author has noted that such a system, even its basic components, are not mandatory, but only recommended for the application, that is why the mechanism of the studied evaluation is often not properly implemented in practice.Доведено, що оцінювання виступає надзвичайно важливим інструментом перевірки якості, ефективності та результативності діяльності судів. Указано, що воно, забезпечуючи отримання інформації про діяльність суду, сприяє дотриманню його незалежності як органу судової влади. Установлено, що оцінювання діяльності суду здійснюється переважно у формах опитування (зовнішнього та внутрішнього) та вивчення звітності й інших документів, що містять статистичні дані про роботу судів. Здійснено їх аналіз та надано пропозиції щодо їх удосконалення

Formation of J-aggregates of Thiamonomethincyanine Dyes in the Presence of CdTe Nanoparticles

The conditions of formation of J-aggregates for three types of thiamonomethincyanine dyes, whose structure is differed by end groups, are studied depending on their concentration and type of interaction with CdTe nanoparticles with size of about 3 nm in aqueous dispersions. The influence of dye structure on the efficiency of formation of J-aggregates in solutions and in films was found. It was found that quantum dots (QDs) of CdTe stabilized by thioglycolic acid can adsorb J-aggregates of the dye molecules on their surface. It was shown for the first time that the hybrid structure of dye-CdTe can be formed through the interaction of negatively charged dye molecules and negatively charged surface of the QDs through the formation of neutral aggregates. It was not found any processes of energy transfer from dye to the particles of CdTe neither for the dimer - CdTe system nor for the J-aggregates – CdTe system. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3544

The thickness of a liquid layer on the free surface of ice as obtained from computer simulation

Molecular dynamic simulations were performed for ice Ih with a free surface by using four water models, SPC/E, TIP4P, TIP4P/Ice and TIP4P/2005. The behavior of the basal plane, the primary prismatic plane and of the secondary prismatic plane when exposed to vacuum was analyzed. We observe the formation of a thin liquid layer at the ice surface at temperatures below the melting point for all models and the three planes considered. For a given plane it was found that the thickness of a liquid layer was similar for different water models, when the comparison is made at the same undercooling with respect to the melting point of the model. The liquid layer thickness is found to increase with temperature. For a fixed temperature it was found that the thickness of the liquid layer decreases in the following order: the basal plane, the primary prismatic plane, and the secondary prismatic plane. For the TIP4P/Ice model, a model reproducing the experimental value of the melting temperature of ice, the first clear indication of the formation of a liquid layer appears at about -100 Celsius for the basal plane, at about -80 Celsius for the primary prismatic plane and at about -70 Celsius for the secondary prismatic plane.Comment: 41 pages and 13 figure