Left-Right Symmetry and Lepton Number Violation at the Large Hadron Electron Collider

We show that the proposed Large Hadron electron Collider (LHeC) will provide an opportunity to search for left-right symmetry and establish lepton number violation, complementing current and planned searches based on LHC data and neutrinoless double beta decay. We consider several plausible configurations for the LHeC -- including different electron energies and polarizations, as well as distinct values for the charge misidentification rate. Within left-right symmetric theories we determine the values of right-handed neutrino and gauge boson masses that could be tested at the LHeC after one, five and ten years of operation. Our results indicate that this collider might probe, via the $\Delta L =2$ signal $e^-p\to e^+jjj$, Majorana neutrino masses up to 1 TeV and $W_R$ masses up to 6.5 TeV. Interestingly, part of this parameter space is beyond the expected reach of the LHC and of future neutrinoless double beta decay experiments.Comment: 22 pages, 6 figures. Matches version published in JHE

Scaling treatment of the random field Ising model

Analytic phenomenological scaling is carried out for the random field Ising model in general dimensions using a bar geometry. Domain wall configurations and their decorated profiles and associated wandering and other exponents $(\zeta,\gamma,\delta,\mu)$ are obtained by free energy minimization. Scaling between different bar widths provides the renormalization group (RG) transformation. Its consequences are (1) criticality at $h=T=0$ in $d \leq 2$ with correlation length $\xi(h,T)$ diverging like $\xi(h,0) \propto h^{-2/(2-d)}$ for $d<2$ and $\xi(h,0) \propto \exp[1/(c_1\gamma h^{\gamma})]$ for $d=2$, where $c_1$ is a decoration constant; (2) criticality in $d = 2+\epsilon$ dimensions at $T=0$, $h^{\ast}= (\epsilon/2c_1)^{1/\gamma}$, where $\xi \propto [(s-s^{\ast})/s]^{-2\epsilon/\gamma}$, $s \equiv h^{\gamma}$. Finite temperature generalizations are outlined. Numerical transfer matrix calculations and results from a ground state algorithm adapted for strips in $d=2$ confirm the ingredients which provide the RG description.Comment: RevTex v3.0, 5 pages, plus 4 figures uuencode

Variable abstraction and approximations in supervisory control synthesis

This paper proposes a method to simplify Extended Finite-state Automata (EFA) in such a way the least restrictive controllable supervisor is preserved. The method is based on variable abstraction, which involves the identification and removal of irrelevant variables from a model. Variable abstraction preserves controllability, and the paper shows how approximations can be used to ascertain least restrictiveness of the synthesis result. The approach has the modelling benefits of Extended Finite-state Automata, leads to optimal control solutions, and reduces the synthesis cost. An example of a manufacturing system illustrates the contributions

Dark Matter from Late Invisible Decays to/of Gravitinos

In this work, we sift a simple supersymmetric framework of late invisible decays to/of the gravitino. We investigate two cases where the gravitino is the lightest supersymmetric particle or the next-to-lightest supersymmetric particle. The next-to-lightest supersymmetric particle decays into two dark matter candidates and has a long lifetime due to gravitationally suppressed interactions. However, because of the absence of any hadronic or electromagnetic products, it satisfies the tight bounds set by big bang nucleosynthesis and cosmic microwaved background. One or both of the dark matter candidates produced in invisible decays can contribute to the amount of dark radiation and suppress perturbations at scales that are being probed by the galaxy power spectrum and the Lyman-alpha forest data. We show that these constraints are satisfied in large regions of the parameter space and, as a result, the late invisible decays to/of the gravitino can be responsible for the entire dark matter relic abundance.Comment: 9 pages, 6 figures. Submitted to PR

Reconhecimento e legitimidade do existir a partir da questão de Terras em Taego Ãwa (2016)

1º Congresso Internacional Epistemologias do Sul: perspectivas críticas - 7 a 9 de novembro de 2016, realizada pela Universidade Federal da Integração Latino-Americana (UNILA).Uma estudante de jornalismo encontra 5 fitas VHS perdidas em um armário na Faculdade de Comunicação da Universidade Federal de Goiás (UFG) no ano de 2003 que continham registros dos índios Avá-canoeiros do Araguaia, na Ilha do Bananal, Tocantins. Aproximadamente 8 anos depois, seu irmão mais novo encontra essas fitas em casa; e revendo o material, ambos decidem ir ao encontro daquelas imagens e iniciam o projeto que se materializa no longa “Taego Ãwa” lançado em 2016. Henrique Borela e Marcela Borela são os dois irmãos que dirigem o filme e todo o processo de contato com estas narrativas registradas. Segundo a dupla, em 2011, quando se estabelece o primeiro encontro, as câmeras de filmagens eram objetos de grande desconfiança por parte dos Avá-canoeiros, que só é superada em 2014 quando as primeiras tomadas do Diretor de Fotografia Vinícius Berger foram realizadas. A partir de então, operou-se um processo de produção de novas imagens e ressignificação dos registros já obtidos inseridos num contexto que dispunha, por um lado, uma equipe de cinema e, por outro, os Avá- canoeiros do Araguaia

Fungal infection characterization in a Peritoneal Dialysis Unit

Dubois Jean-Jacques. B. Lizet, F. de Ravignan ; Comprendre un paysage. Guide pratique de recherche. 1987. In: Hommes et Terres du Nord, 1987/4. Tourisme et développement local et régional. p. 256