Search for pair production of heavy vector-like quarks decaying into high-p_{T} W bosons and top quarks in the lepton-plus-jets final state in pp collisions at s√=13 TeV with the ATLAS detector

A search is presented for the pair production of heavy vector-like B quarks, primarily targeting B quark decays into a W boson and a top quark. The search is based on 36.1 fb⁻¹ of pp collisions at s√=13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, characterised by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, and multiple jets, of which at least one is b-tagged. No significant deviation from the Standard Model expectation is observed. The 95% confidence level lower limit on the B mass is 1350 GeV assuming a 100% branching ratio to Wt. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. The 100% branching ratio limits are found to be also applicable to heavy vector-like X production, with charge +5/3, that decay into Wt. This search is also sensitive to a heavy vector-like B quark decaying into other final states (Zb and Hb) and thus mass limits on B production are set as a function of the decay branching ratios

Resultados de um programa de triagem auditiva neonatal em Cuiabá: Mato Grosso

OBJETIVO: Descrever os resultados obtidos em um programa de triagem auditiva neonatal, localizado na cidade de Cuiabá (MT) no período de 2009 a 2010. MÉTODOS: Foram analisados os exames de emissões otoacústicas de 1964 recém-nascidos de baixo risco e de 123 recém-nascidos de alto risco, arquivados no computador do serviço, em relação à quantidade dos que passaram ou falharam na triagem. RESULTADOS: No grupo de baixo risco 94,5% dos sujeitos passaram; 1,2% falharam e 4,3% não retornaram para o reteste. No grupo de alto risco, 71,54% passaram; 3,2% falharam e 25,4% não retornaram para o reteste. CONCLUSÃO: Os resultados obtidos pelo programa estão de acordo com as expectativas de órgãos internacionais e nacionais.PURPOSE: To describe the results obtained in a newborn hearing screening program in the city of Cuiabá (MT), Brazil, in the period from 2009 to 2010. METHODS: We analyzed the otoacoustic emissions results of 1964 low-risk and 123 high-risk newborns, archived in the computer of the service, regarding the amount of those who passed or failed the screening. RESULTS: In the low-risk group, 94.5% passed, 1.2% failed and 4.3% did not return for re-test. In the high-risk group, 71.54% passed, 3.2% failed and 25.4% did not return for re-test. CONCLUSION: The results obtained by the program are in agreement with the expectations of international and national institutions