Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector

Measurements of four-lepton differential and integrated fiducial cross-sections in events with two same-flavour, opposite-charge electron or muon pairs are presented. The data correspond to 139 fb−1 of s√ = 13 TeV proton-proton collisions, collected by the ATLAS detector during Run 2 of the Large Hadron Collider (2015–2018). The final state has contributions from a number of interesting Standard Model processes that dominate in different four-lepton invariant mass regions, including single Z boson production, Higgs boson production and on-shell ZZ production, with a complex mix of interference terms, and possible contributions from physics beyond the Standard Model. The differential cross-sections include the four-lepton invariant mass inclusively, in slices of other kinematic variables, and in different lepton flavour categories. Also measured are dilepton invariant masses, transverse momenta, and angular correlation variables, in four regions of four-lepton invariant mass, each dominated by different processes. The measurements are corrected for detector effects and are compared with state-of-the-art Standard Model calculations, which are found to be consistent with the data. The Z → 4ℓ branching fraction is extracted, giving a value of (4.41 ± 0.30) × 10−6. Constraints on effective field theory parameters and a model based on a spontaneously broken B − L gauge symmetry are also evaluated. Further reinterpretations can be performed with the provided information

Search for bottom-squark pair production in pp collision events at √s=13 TeV with hadronically decaying τ-leptons, b-jets, and missing transverse momentum using the ATLAS detector

A search for pair production of bottom squarks in events with hadronically decaying τ -leptons, b -tagged jets, and large missing transverse momentum is presented. The analyzed dataset is based on proton-proton collisions at √ s = 13     TeV delivered by the Large Hadron Collider and recorded by the ATLAS detector from 2015 to 2018, and corresponds to an integrated luminosity of 139     fb − 1 . The observed data are compatible with the expected Standard Model background. Results are interpreted in a simplified model where each bottom squark is assumed to decay into the second-lightest neutralino ˜ χ 0 2 and a bottom quark, with ˜ χ 0 2 decaying into a Higgs boson and the lightest neutralino ˜ χ 0 1 . The search focuses on final states where at least one Higgs boson decays into a pair of hadronically decaying τ -leptons. This allows the acceptance and thus the sensitivity to be significantly improved relative to the previous results at low masses of the ˜ χ 0 2 , where bottom-squark masses up to 850 GeV are excluded at the 95% confidence level, assuming a mass difference of 130 GeV between ˜ χ 0 2 and ˜ χ 0 1 . Model-independent upper limits are also set on the cross section of processes beyond the Standard Model

O enfermeiro no gerenciamento à qualidade em serviço hospitalar de emergência: revisão integrativa da literatura La enfermera en la gestión de la calidad en el servicio de urgencia en el hospital: revisión integradora de la literatura Quality management by nurses in hospitals' emergency services: integrative literature review

O estudo teve por objetivo analisar publicações relacionadas à atuação de enfermeiros no gerenciamento à qualidade em Serviço Hospitalar de Emergência. Por meio de revisão integrativa da literatura foram identificados 4780 artigos dos quais se selecionou oito, considerando os critérios: artigos completos; publicados no período entre 2000 a 2010; disponíveis no idioma português; indexados nas bases de dados da Biblioteca Virtual em Saúde. Todo o material foi analisado por meio da técnica Análise de Conteúdo. Emanaram-se duas categorias temáticas: Atuando na estruturação da equipe de enfermagem à qualidade do atendimento e Gerenciando as ações de enfermagem à qualidade no atendimento. Conclui-se que a promoção da qualidade do atendimento prestado em Serviço Hospitalar de Emergência é vinculada às ações de humanização do cuidado e do cuidador e que a atuação do enfermeiro no Acolhimento com Classificação de Risco é uma das principais estratégias para o gerenciamento da qualidade nesses serviços.<br>Este estudio tuvo como objetivo analizar las publicaciones relacionadas con las actividades de las enfermeras en la gestión de la calidad del Servicio de Urgencia en Hospital. A través de una revisión integradora de la literatura se identificaron 4780 artículos de los cuales ocho han sido seleccionados teniendo en cuenta los criterios de: artículos completos, publicados desde 2000 hasta 2010, disponibles en portugués, indexados en las bases de datos de la Biblioteca Virtual en Salud. Todo el material fue analizado por análisis de contenido y emanaron dos categorías temáticas: actuando en la estructura del personal de enfermería a la calidad de las acciones de atención de enfermería y gestión de la calidad de la atención. Concluye que la promoción del calidad de la atención prestada en el Servicio de Urgencia en Hospital está vinculado a las acciones de cuidado humano y el cuidador y que el papel de las enfermeras en la Acogida Clasificadora de Riesgo es una estrategia clave para la gestión de calidad en los servicios.<br>This study aimed to analyze publications related to the activities of nurses managing the quality in the Emergency Services of Hospitals. An integrative literature review identified 4780 articles of which 8 were selected considering the criteria: full articles, published from 2000 to 2010; available in Portuguese; indexed in the databases of the Virtual Health Library. All the material was analyzed through Content Analysis. Two themes emerged: Working in the structuring of the nursing staff to the quality of care and Nursing actions managing the quality of care. The conclusion is that the promotion of the quality of care provided in Hospitals' Emergency Services is linked to the actions promoting the humanization of both care and caregivers, and that the role of the nurse in the User Reception with Risk Rating is a key strategy for managing quality in services