Growth and properties of strained VOx thin films with controlled stoichiometry

We have succeeded in growing epitaxial films of rocksalt VOx on MgO(001) substrates. The oxygen content as a function of oxygen flux was determined using 18O2-RBS and the vanadium valence using XAS. The upper and lower stoichiometry limits found are similar to the ones known for bulk material (0.8<x<1.3). From the RHEED oscillation period a large number of vacancies for both vanadium and oxygen were deduced, i.e. ~16% for stoichiometric VO. These numbers are, surprisingly, very similar to those for bulk material and consequently quite strain-insensitive. XAS measurements reveal that the vacancies give rise to strong low symmetry ligand fields to be present. The electrical conductivity of the films is much lower than the conductivity of bulk samples which we attribute to a decrease in the direct overlap between t2g orbitals in the coherently strained layers. The temperature dependence of the conductivity is consistent with a variable range hopping mechanism.Comment: 12 pages, 16 figures included, revised versio

Intercalibration of the barrel electromagnetic calorimeter of the CMS experiment at start-up

Calibration of the relative response of the individual channels of the barrel electromagnetic calorimeter of the CMS detector was accomplished, before installation, with cosmic ray muons and test beams. One fourth of the calorimeter was exposed to a beam of high energy electrons and the relative calibration of the channels, the intercalibration, was found to be reproducible to a precision of about 0.3%. Additionally, data were collected with cosmic rays for the entire ECAL barrel during the commissioning phase. By comparing the intercalibration constants obtained with the electron beam data with those from the cosmic ray data, it is demonstrated that the latter provide an intercalibration precision of 1.5% over most of the barrel ECAL. The best intercalibration precision is expected to come from the analysis of events collected in situ during the LHC operation. Using data collected with both electrons and pion beams, several aspects of the intercalibration procedures based on electrons or neutral pions were investigated

Measurements of differential production cross sections for a Z boson in association with jets in pp collisions at root s=8 TeV

Peer reviewe

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

Search for the associated production of the Higgs boson with a top-quark pair

A search for the standard model Higgs boson produced in association with a top-quark pair t t ¯ H (tt¯H) is presented, using data samples corresponding to integrated luminosities of up to 5.1 fb &#8722;1 and 19.7 fb &#8722;1 collected in pp collisions at center-of-mass energies of 7 TeV and 8 TeV respectively. The search is based on the following signatures of the Higgs boson decay: H &#8594; hadrons, H &#8594; photons, and H &#8594; leptons. The results are characterized by an observed t t ¯ H tt¯H signal strength relative to the standard model cross section, &#956; = &#963;/&#963; SM ,under the assumption that the Higgs boson decays as expected in the standard model. The best fit value is &#956; = 2.8 ± 1.0 for a Higgs boson mass of 125.6 GeV

Measurement of prompt Jψ\psi pair production in pp collisions at \sqrt s = 7 Tev

Production of prompt J/ &#968; meson pairs in proton-proton collisions at s s&#8730; = 7 TeV is measured with the CMS experiment at the LHC in a data sample corresponding to an integrated luminosity of about 4.7 fb &#8722;1 . The two J/ &#968; mesons are fully reconstructed via their decays into &#956; + &#956; &#8722; pairs. This observation provides for the first time access to the high-transverse-momentum region of J/ &#968; pair production where model predictions are not yet established. The total and differential cross sections are measured in a phase space defined by the individual J/ &#968; transverse momentum ( p T J/ &#968; ) and rapidity (| y J/ &#968; |): | y J/ &#968; | 6.5 GeV/ c ; 1.2 4.5 GeV/ c . The total cross section, assuming unpolarized prompt J/ &#968; pair production is 1.49 ± 0.07 (stat) ±0.13 (syst) nb. Different assumptions about the J/ &#968; polarization imply modifications to the cross section ranging from &#8722;31% to +27%

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

Charged-particle nuclear modification factors in PbPb and pPb collisions at √=sNN=5.02 TeV

The spectra of charged particles produced within the pseudorapidity window |η| < 1 at √ sNN = 5.02 TeV are measured using 404 µb −1 of PbPb and 27.4 pb−1 of pp data collected by the CMS detector at the LHC in 2015. The spectra are presented over the transverse momentum ranges spanning 0.5 < pT < 400 GeV in pp and 0.7 < pT < 400 GeV in PbPb collisions. The corresponding nuclear modification factor, RAA, is measured in bins of collision centrality. The RAA in the 5% most central collisions shows a maximal suppression by a factor of 7–8 in the pT region of 6–9 GeV. This dip is followed by an increase, which continues up to the highest pT measured, and approaches unity in the vicinity of pT = 200 GeV. The RAA is compared to theoretical predictions and earlier experimental results at lower collision energies. The newly measured pp spectrum is combined with the pPb spectrum previously published by the CMS collaboration to construct the pPb nuclear modification factor, RpA, up to 120 GeV. For pT > 20 GeV, RpA exhibits weak momentum dependence and shows a moderate enhancement above unity

Life Projects Of Young Adults With Hiv Acquired By Vertical Transmission: An Exploratory Study With Patients Of An Infectious Diseases' Outpatients Department [projetos De Vida De Adultos Jovens Portadores De Hiv Por Transmissão Vertical: Estudo Exploratório Com Usuários De Um Ambulatório De Infectologi]

This research had the intention to understand the life projects of young adults living with HIV/Aids infected through vertical transmission: how they deal with studies, work and with building a family. Another objective was to know their experiences regarding health assistance received. The research method was: socio-demographic questionnaires and semi-structured interviews. Sixteen interviews were performed with people between eighteen and twenty two years-old who were users of a public out patients service specialized in Infectious Diseases. Data from the interviews was analyzed according to the principles of thematic analysis. Six thematic categories were found: study and schooling; labor and employment; sexuality and family building; experiences of prejudice; adherence to treatment and reception at the health service.I Interviewees appointed the whole education ambient as an important way to reach social inclusion, as well as autonomy. They presented their working life as the first source of subsistence and independence. The exercise of their sexuality was marked by HIV, implicating in special care. Regarding conjugality, the interviewees' projects were varied: informal union, legal marriage and life without partner. The projects involving maternity/paternity were strongly influenced by the presence of HIV, which results in many doubts and worries. Interviewees reported the existence of prejudice in various situations. As regarding the adherence to treatment, subjects talked about difficulties and coping mechanisms. Being well received by friends, coworkers and family was considered pivotal to developing and maintaining life projects.214928939Amazonas, M.C.L.A., Braga, M.G.R., Reflexões acerca das novas formas de parentalidade e suas possíveis vicissitudes culturais e subjetivas (2006) Ágora, 9 (2), pp. 177-191. , Rio de JaneiroArendt, H., (1987) A Condição Humana, , São Paulo: UniversitáriaAyres, J.R.C.M., (2004) Adolescentes E Jovens Vivendo Com HIV/aids: Cuidado E Promoção Da Saúde No Cotidiano Da Equipe Multiprofissional, , São Paulo: Enhancing Care IniciativeBoutinet, J.P., (1990) Antropologia Do Projeto, , Lisboa: Instituto Piaget(2003) Política Nacional De Humanização (PNH): Humanização Da Atenção E Da Gestão Em Saúde No Sistema Único De Saúde - SUS, , BRASIL. Ministério da Saúde, Brasília, DFSecretaria de Vigilância em Saúde (2006) Manual De Rotinas Para Assistência De Adolescentes Vivendo Com HIV/aids, , BRASIL. 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M, São Paulo: BrasilienseCohen, J., School-related issues among HIV- infected children (1997) Pediatrics, 100, pp. 8-11. , Elk Grove Village, IllinoisDavis, C., Silva, M.A.S.S., Espósito, Y., Papel e valor das interações sociais em sala de aula (1989) Cadernos De Saúde Pública, 71, pp. 49-54. , Rio de JaneiroFreire, P., (1987) Pedagogia Do Oprimido, , Rio de Janeiro: Paz e TerraGarcia, S., Koyama, M.A.H., Estigma, discriminação e HIV/Aids no contexto brasileiro, 1998 e 2005 (2008) Revista De Saúde Pública, 42 (1), pp. 72-83. , São PauloGreco, D.B., A epidemia da aids: Impacto social, científico, econômico e perspectivas (2008) Estudos Avançados, 22 (64), pp. 73-94. , São PauloGrimgerg, M., Sexualidad, experiencias corporales y género: Un studio etnografico entre personas viviendo com VIH em el área metropolitana de Buenos Aires, Argentina (2009) Cadernos De Saúde Pública, 25 (1), pp. 133-141. , Rio de JaneiroGuimarães, M.S., Raxach, J.C., A questão da adesão: Os desafios impostos pela aids no Brasil e as respostas do Governo, de pessoas e da sociedade (2002) Revista Ciências Sociais E Humanas, 32 (13), pp. 69-90. , PiracicabaGutierrez, D.M.D., Minayo, M.C.S., Família, redes sociais e saúde: O imbricamento necessário (2008) Fazendo Gênero - Corpo, Violência E Poder, 8, pp. 1-8. , FlorianópolisMarques, H.H.S., A revelação do diagnóstico na perspectiva dos adolescentes vivendo com HIV/aids e seus pais e cuidadores (2006) Cadernos De Saúde Pública, 22 (3), pp. 619-629. , Rio de JaneiroMeneghel, S.N., Histórias de dor e de vida: Oficinas de contadores de histórias. Saúde e Sociedade (2008) São Paulo, 17 (2), pp. 220-228Nascimento, I.P., (2002) As Representações Sociais Do Projeto De Vida Dos Adolescentes: Um Estudo Psicossocial, , Tese (Doutorado em Educação) - Pontifícia Universidade Católica, São PauloNogueira-Martins, M.C.F., Bógus, C.M., Considerações sobre a metodologia qualitativa como recurso para o estudo das ações de humanização em saúde (2004) Saúde E Sociedade, 13 (3), pp. 44-57. , São Paulo(2002) HIV/ Aids No Mundo Do Trabalho: As Ações E a Legislação Brasileira, , OIT - Organização Internacional do Trabalho, Brasília: OITPolejack, L., Costa, L.F., Aids e conjugalidade: O desafio de com (viver) (2002) Revista De Ciências Sociais E Humanas, 13 (1), pp. 131-139. , PiracicabaReis, J.R.T., Família, emoção e ideologia (2001) Psicologia Social: O Homem Em Movimento, pp. 99-123. , CODO, W.LANE, S. T. M, São Paulo: BrasilienseSantos, A.S.A., Notas sobre a solidariedade e o fenômeno da orfandade na sociedade Akan-Agni Morofoé da Costa do Marfim (África Do Oeste) (2006) Saúde E Sociedade, 15 (3), pp. 40-56. , São PauloSarriera, J.C., Os (des)caminhos dos jovens na sua passagem da escola ao trabalho (2004) Psicologia Comunitária: Estudos Atuais, pp. 43-105. , SARRIERA, J. C, São Paulo: Ed. SalinaSawaia, B., Exclusão ou inclusão perversa? (1999) As Artimanhas Da Exclusão: Análise Psicossocial E Ética Da Desigualdade Social, pp. 7-13. , SAWAIA, B, Petrópolis: VozesSeidl, E.M.F., (2001) Pessoas Vivendo Com HIV/aids: Configurando Relações Entre Enfrentamento, Suporte Social E Qualidade De Vida, , Tese (Doutorado em Psicologia) - Universidade de Brasília, BrasíliaSilva, C.R.C., Mendes, R., Nakamura, E., A dimensão da ética na pesquisa em saúde com ênfase na abordagem qualitativa (2012) Saúde E Sociedade, 21 (1), pp. 32-41. , São PauloTavares, M.C.T., (2003) A Experiência De Adolescer Com Aids, , Dissertação (Mestrado em Enfermagem) - Universidade Federal de Minas Gerais, Belo HorizonteVernazza, P.L., HIV-discordant couples and parenthood: How are we dealing the risk of transmission? (2006) AIDS, 20 (4), pp. 635-636. , LondonVygotsky, L.S., O desenvolvimento dos processos psicológicos superiores (2007) A Formação Social Da Mente, pp. 26-54. , VYGOTSKY, L. S, São Paulo: Martins Fonte