Form factors and differential distributions in rare radiative leptonic B-decays

We study rare radiative leptonic decays $B_{(s)}\to e^+e^-\gamma$ and $B_{(s)}\to \mu^+\mu^-\gamma$ within relativistic quark model. In addition to previous analysis we give the estimations of the branching ratios for four values of the minimal photon energy, which correspond to photon selection criteria of the Belle and LHCb detectors. We find out that the branching ratios only slightly change. The highest values corresponding to $E^\gamma_{min}=80 \textrm{MeV}$ are ${\cal B}(\bar B^0_s\to e^+e^-\gamma)=18.5\times10^{-9}$ and ${\cal B}(B^0_s\to \mu^+\mu^-\gamma)=11.9\times10^{-9}$. We present the distribution of the forward-backward asymmetry.Comment: 9 pages, 8 figures, Talk given at XII Quark Confinement and the Hadron Spectrum, August 29 -- September 3, 2016, Thessaloniki, Greece. arXiv admin note: substantial text overlap with arXiv:1609.0649

Rare radiative leptonic B-decays

We obtain predictions for $B_{(s)}\to e^+e^-\gamma$ and $B_{(s)}\to \mu^+\mu^-\gamma$ decays. All the contributions containing long-distance QCD effects are calculated in the framework of relativistic quark model. The contributions of the light vector-meson resonances related to the virtual photon emission from valence quarks of the $B$-meson are included. The highest branching ratios for the radiative leptonic B-decays are ${\cal B}(\bar B^0_s\to e^+e^-\gamma)=18.8\times10^{-9}$ and ${\cal B}(B^0_s\to \mu^+\mu^-\gamma)=12.2\times10^{-9}$. We also give the distribution of the foward-backward asymmetry.Comment: 8 pages, 11 figures, talk given at the 19th International Seminar on High Energy Physics QUARKS-2016, Pushkin, Russia, 29 May - 4 June, 201

Information Model of Cloud App Scaling with Variable Load Peaks

The information model of cloud app was done. It is a formal description of cloud app infrastructure and possible transitions between them, and cloud app current working state classification criterion. Cloud app current state classification criterion on the basis of Page-Hinckley method and calendar of events related to the cloud app working state considers the current state to one of three classes in order to improve the accuracy of prediction of cloud app workload.Proposed criterion was compared with standard offline criterion that analyzes information about the entire time series of cloud app through a considerable time after the events that lead to the load peak, and therefore can\u27t be used when grading in real time. It is shown that the classification of cloud app state is consistent in 92 % of cases.The resulting information model of cloud app scaling with variable load peaks can be used as a component of information technology for cloud app scaling with variable load peaks

Cloud Application Working Mode Classification Criarite

Classification criteria that classifies current working mode of a c loud application with variable load peaks was formed. Introduced criteria allows to differentiate three classes of cloud application states. The criteria is based on Page -Hinkley method and is improved by using a calendar of events that can cause load peak s to increase precision of forecasting of a cloud application state

Family Relationship Hope in Parents of Children with Autism Spectrum Disorder

Parents of children with Autism Spectrum Disorder (ASD) experience unique parenting demands. Although these parents often report high levels of mental health challenges, such as depression (e.g., Scherer et al., 2019), they also report resilience factors such as family support and hope (e.g., Ekas et al., 2016). The present study investigated a novel construct, family relationship hope, in parents of children with ASD by examining the psychometric properties of the Family Relationship Hope Scale (FRHS), variables associated with family relationship hope and its link with depression. Factor analyses examined the factor structure and model fit of the FRHS. The post-crisis phase of the Double ABCX model (McCubbin & Patterson, 1983) provided a framework to conceptualize possible predictors of family relationship hope, through three steps in a hierarchical linear regression. Finally, a logistic regression analysis examined the likelihood of participants having clinically significant depression (Kroenke et al., 2001). Findings indicated a single factor structure, good model fit and internal reliability for the FRHS. Increased family support and having an adolescent child with ASD predicted higher family relationship hope, and relationship status and age of diagnosis served as important predictors in the model. Finally, family relationship hope significantly predicted the presence of clinically significant depression in parents of children with ASD. Results of the present study offer implications for counselor educators, mental health counselors, policy, and research that may help enhance the lives of families that include a child with ASD

Constraints on the anomalous WtbWtb couplings from BB-physics experiments

We analyze constraints on the anomalous $Wtb$ couplings from $B$-physics experiments, performing a correlated analysis and allowing all anomalous couplings to differ simultaneously from their Standard-Model (SM) values. The $B$-physics observables allow one to probe three linear combinations out of the four anomalous couplings, which parameterize the $Wtb$ vertex under the assumption that the SM symmetries remain the symmetries of the effective theory. The constraints in this work are obtained by taking into account the following $B$-physics observables: the $\bar B^0-B^0$ oscillations, the leptonic $B\to \mu^+\mu^-$ decays, the inclusive radiative $B\to X_s\gamma$ decays, and the differential branching fractions in the semileptonic inclusive $B\to X_s \mu^+ \mu^-$ and exclusive $B\to (K,K^*)\mu^+\mu^-$ decays at small $q^2$, $q$ the momentum of the $\mu^+\mu^-$ pair. We find that the SM values of the anomalous couplings belong to the 95\% CL allowed region obtained this way but lie beyond the 68\% allowed region. We also report that the distributions of the anomalous couplings obtained within our scenario differ from the results of the 1D scenario, when only one of the couplings is allowed to deviate from its SM value.Comment: 7 pages, extended version. The present analysis involves also exclusive B-decays resulting in more stringent constraints on the anomalous coupling