Search for jet extinction in the inclusive jet-pT spectrum from proton-proton collisions at s=8 TeV

Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.The first search at the LHC for the extinction of QCD jet production is presented, using data collected with the CMS detector corresponding to an integrated luminosity of 10.7  fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV. The extinction model studied in this analysis is motivated by the search for signatures of strong gravity at the TeV scale (terascale gravity) and assumes the existence of string couplings in the strong-coupling limit. In this limit, the string model predicts the suppression of all high-transverse-momentum standard model processes, including jet production, beyond a certain energy scale. To test this prediction, the measured transverse-momentum spectrum is compared to the theoretical prediction of the standard model. No significant deficit of events is found at high transverse momentum. A 95% confidence level lower limit of 3.3 TeV is set on the extinction mass scale

Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV

Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample corresponds to an integrated luminosity of about 19.5 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV collected in 2012 with the CMS detector at the LHC. The main emphasis is neutralino pair production in which each neutralino decays either to a Higgs boson (h) and an LSP or to a Z boson and an LSP, leading to hh, hZ, and ZZ states with missing transverse energy (E-T(miss)). A second aspect is chargino-neutralino pair production, leading to hW states with E-T(miss). The decays of a Higgs boson to a bottom-quark pair, to a photon pair, and to final states with leptons are considered in conjunction with hadronic and leptonic decay modes of the Z and W bosons. No evidence is found for supersymmetric particles, and 95% confidence level upper limits are evaluated for the respective pair production cross sections and for neutralino and chargino mass values

O perfil dos ingressantes de um programa de educação física para idosos e os motivos da adesão inicial The profile of the initiators in a physical education program for elderly and the reasons for the initial adherence

Numa sociedade em pleno envelhecimento, a Educação Física deverá desempenhar um importante papel. A cada ano, cresce a procura por programas supervisionados, como é o caso do Programa Autonomia para Atividade Física do Idoso - PAAF. Conhecer o idoso é fundamental para orientar as ações pedagógicas e atender suas expectativas. Assim, este trabalho destina-se a conhecer o perfil sócio-demográfico, a atividade física pregressa, verificar a saúde percebida e entender quais foram os motivos de adesão ao programa. Participaram desse estudo 54 pessoas (14 homens e 40 mulheres), com idade acima de 60 anos (66,45 ± 5,176 anos de idade), que ingressaram no PAAF-2002. Foram utilizados questionários, em que foram consideradas as seguintes variáveis: gênero, idade, nível de escolaridade, estado civil; saúde percebida do ingressante; a atividade profissional e a atividade física pregressa e o nível sócio-econômico. Para verificar os motivos da adesão inicial utilizamos tabela tipo Liekert e aplicamos o Índice de Consistência Interna de Liekert. Utilizamos o Coeficiente de Concordância de Kendall (W) e o Teste de Friedman (Xr²), com nível de significância (p = 0,05). A maioria dos alunos tinha entre 60 a 70 anos de idade, pertencia aos níveis sócio-econômico A e B e possuía alto nível de escolaridade. A maioria tinha pelo menos uma doença, porém, a saúde percebida era positiva. Os motivos de adesão relatados foram: aprender fazer exercícios físicos, melhorar condicionamento físico e prevenir problemas de saúde. Já, ocupar o tempo livre e fazer amigos foram motivos considerados menos importantes..<br>In an aging society, Physical Education has paramount importance. Each year the search for supervised programs expends, as in the Elderly Physical Activity Autonomy Program (PAAP) case. Understanding the elderly is important to orientate the pedagogic actions and to attend participants' needs. Therefore, the purpose of this study was to determine the social demographic characteristics, previous physical activity, perceived health of the elderly and to understand the reasons for their adherence in the PAAP. Fifty four individuals (14 male and 40 female, 66,45 ± 5,176 years old) that went into PAAP took part in this study. Questionnaires were used with the following variables: type, age, education level, marital status, perceived health, previous professional activity, previous physical activity and social-economic level. To check the reasons for the first adherence, we used the Liekert table and the Liekert Internal Consistence Index. To confirm the results, we applied the Kendall Concordance Coefficient (W) and the Friedman test (Xr²), adopting p = 0.05 as the significance level. The majority of the participants belonged to the A and B socio-economical classes and had a bachelor's degree. The majority had, at least, one disease, but the perceived health was positive. The adherence reasons reported were: learn how to perform physical exercises, to improve physical condition and to prevent health problems. Further, take up free time and to make friends were considered the less important reasons

The Earth's Magnetic Field in the Space Age: An Introduction to Terrestrial Magnetism

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