Searches for pair production of charginos and top squarks in final states with two oppositely charged leptons in proton-proton collisions at root s=13 TeV

A search has been performed for heavy resonances decaying to ZZ or ZW in 2l2q final states, with two charged leptons (l = e, mu) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The analysis is sensitive to resonances with masses in the range from 400 to 4500 GeV. Two categories are defined based on the merged or resolved reconstruction of the hadronically decaying vector boson, optimized for high- and low-mass resonances, respectively. The search is based on data collected during 2016 by the CMS experiment at the LHC in proton-proton collisions with a center-of-mass energy of root s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). No excess is observed in the data above the standard model background expectation. Upper limits on the production cross section of heavy, narrow spin-1 and spin-2 resonances are derived as a function of the resonance mass, and exclusion limits on the production of W' bosons and bulk graviton particles are calculated in the framework of the heavy vector triplet model and warped extra dimensions, respectively.A search has been performed for heavy resonances decaying to ZZ or ZW in 2l2q final states, with two charged leptons (l = e, mu) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The analysis is sensitive to resonances with masses in the range from 400 to 4500 GeV. Two categories are defined based on the merged or resolved reconstruction of the hadronically decaying vector boson, optimized for high- and low-mass resonances, respectively. The search is based on data collected during 2016 by the CMS experiment at the LHC in proton-proton collisions with a center-of-mass energy of root s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). No excess is observed in the data above the standard model background expectation. Upper limits on the production cross section of heavy, narrow spin-1 and spin-2 resonances are derived as a function of the resonance mass, and exclusion limits on the production of W' bosons and bulk graviton particles are calculated in the framework of the heavy vector triplet model and warped extra dimensions, respectively.A search for pair production of supersymmetric particles in events with two oppositely charged leptons (electrons or muons) and missing transverse momentum is reported. The data sample corresponds to an integrated luminosity of 35.9 fb(-1) of proton-proton collisions at TeV collected with the CMS detector during the 2016 data taking period at the LHC. No significant deviation is observed from the predicted standard model background. The results are interpreted in terms of several simplified models for chargino and top squark pair production, assuming R-parity conservation and with the neutralino as the lightest supersymmetric particle. When the chargino is assumed to undergo a cascade decay through sleptons, with a slepton mass equal to the average of the chargino and neutralino masses, exclusion limits at 95% confidence level are set on the masses of the chargino and neutralino up to 800 and 320 GeV, respectively. For top squark pair production, the search focuses on models with a small mass difference between the top squark and the lightest neutralino. When the top squark decays into an off-shell top quark and a neutralino, the limits extend up to 420 and 360 GeV for the top squark and neutralino masses, respectively.Peer reviewe

Desenvolvimento moral pró-social: Semelhanças e diferenças entre os modelos teóricos de Eisenberg e Kohlberg Prosocial moral development: similarities and differences between Eisenberg's and Kohlberg's theoretical models

O presente artigo consiste em uma revisão crítica da literatura na área do desenvolvimento moral pró-social. O modelo teórico do desenvolvimento pró-social de Eisenberg é apresentado e discutido em comparação com o modelo teórico de julgamento moral de Kohlberg. Esses modelos apresentam enfoques complementares no estudo da moralidade. Enquanto Kohlberg estudava o julgamento moral a partir de transgressão, Eisenberg investiga a moralidade em funções de ações pró-sociais como comportamentos de ajuda. Os fatores psicológicos que podem ser concebidos como determinantes da pró-sociabilidade são também apresentados e discutidos. Finalmente, a pesquisa recente crítica ou corroboradora de ambos os modelos é sumarizada.<br>This paper presents a critical review of the literature on pro-social moral development. Eisenberg's pro-social development model is presented and discussed in contrast to Kohlberg's theory. These models focus on complementary views in the study of morality. Whereas Kohlberg studied moral judgment using dilemmas involving transgressions, Eisenberg looks at pro-social actions, such as helping behavior. Psychological factors that might determine pro-social reasoning are also presented and discussed. Finally, recent research criticizing or corroborating either model is summarized