V. Pleitez
Unesp, Instituto De Física Teórica - Ift, Faculty Member
We present a critical analysis of what is called Relational Mechanics, as it has been presented in a book thus entitled, which has been recently reviewed in this journal.Neste artigo fazemos uma análise crítica à proposta da Mecânica... more
We present a critical analysis of what is called Relational Mechanics, as it has been presented in a book thus entitled, which has been recently reviewed in this journal.Neste artigo fazemos uma análise crítica à proposta da Mecânica Relacional tal como apresentada no livro de mesmo nome, objeto de uma resenha recente nesta revista.260270Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq
... Abdalla é sem dúvida de leitura fácil e agradável para um(a) estudante do ensino médio ou mesmo para um fısico profissional. Por isso n˜ao duvido em reco-mendá-lo a professores e estudantes de qualquer nıvel de ensino que desejem... more
... Abdalla é sem dúvida de leitura fácil e agradável para um(a) estudante do ensino médio ou mesmo para um fısico profissional. Por isso n˜ao duvido em reco-mendá-lo a professores e estudantes de qualquer nıvel de ensino que desejem saber um pouco mais de algumas das ...
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ABSTRACT Several left-right asymmetries in Møller (electron-electron), muon-muon and electron-muon scattering are considered in the context of the electroweak standard model and in a model with SU(3)C⊗SU(3)L⊗U(1)Y gauge symmetry at tree... more
ABSTRACT Several left-right asymmetries in Møller (electron-electron), muon-muon and electron-muon scattering are considered in the context of the electroweak standard model and in a model with SU(3)C⊗SU(3)L⊗U(1)Y gauge symmetry at tree level in collider experiments. We show that these asymmetries are very sensitive to a doubly charged vector bilepton in the case of ee and mumu colliders and to an extra Z' neutral vector boson contribution in e-mu- collider. .
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We propose to investigate a secluded WIMP dark matter model consisting of neutral fermions as the dark matter candidate and a Proca-Wentzel (PW) field as a mediator. In the model that we consider here, dark matter WIMPs interact with... more
We propose to investigate a secluded WIMP dark matter model consisting of neutral fermions as the dark matter candidate and a Proca-Wentzel (PW) field as a mediator. In the model that we consider here, dark matter WIMPs interact with standard model (SM) particles only through the PW field of ~ MeV -- multi-GeV mass particles. The interactions occur via an U(1)' mediator, V_{\mu}', which couples to the SM by kinetic mixing with U(1) hypercharge bosons, B_{\mu}. One important difference between our model and other such models in the literature is the absence of an extra singlet scalar, so that the parameter with dimension of mass M^2_V is not related to a spontaneous symmetry breaking. The mass scale of the mediator and the absence of the singlet scalar can lead to interesting astrophysical signatures. We show that the GeV-energy gamma-ray excess in the galactic center region, as derived from Fermi-LAT Gamma-ray Space Telescope data, can be attributed to such secluded dark mat...
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Research Interests: Physics, Quantum Physics, Particle Physics, CP Violation, Physical, and 4 moreTime Reversal, Quark, Muon, and Lepton
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By considering left–right (L–R) asymmetries we study the capabilities of lepton colliders in searching for new exotic vector bosons. Specifically we study the effect of a doubly charged bilepton boson and an extra neutral vector boson... more
By considering left–right (L–R) asymmetries we study the capabilities of lepton colliders in searching for new exotic vector bosons. Specifically we study the effect of a doubly charged bilepton boson and an extra neutral vector boson appearing in a 3-3-1 model on the L–R asymmetries for the processes e-e-→e-e-, μ-μ-→ μ-μ- and e-μ-→e- μ- and show that these asymmetries are very sensitive to these new contributions and that they are in fact powerful tools for discovery of this sort of vector bosons.
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... raios c osmicos ou tentavam obter baixas tempe-raturas. Te oricos como Einstein estudavam a genera-liza cão da relatividade restrita que o levaria a proposta da relatividade geral. At eo come co dos anos 30 pensava-se ...