Is the New Resonance Spin 0 or 2? Taking a Step Forward in the Higgs Boson Discovery

The observation of a new boson of mass \sim 125\gev at the CERN LHC may finally have revealed the existence of a Higgs boson. Now we have the opportunity to scrutinize its properties, determining its quantum numbers and couplings to the standard model particles, in order to confirm or not its discovery. We show that by the end of the 8 TeV run, combining the entire data sets of ATLAS and CMS, it will be possible to discriminate between the following discovery alternatives: a scalar $J^P=0^+$ or a tensor $J^P=2^+$ particle with minimal couplings to photons, at a $5\sigma$ statistical confidence level at least, using only diphotons events. Our results are based on the calculation of a center-edge asymmetry measure of the reconstructed {\it sPlot} scattering polar angle of the diphotons. The results based on asymmetries are shown to be rather robust against systematic uncertainties with comparable discrimination power to a log likelihood ratio statistic.Comment: 11 pages, 6 figures, 1 table. References added, minor typos correcte

Direct estimation of functionals of density operators by local operations and classical communication

We present a method of direct estimation of important properties of a shared bipartite quantum state, within the "distant laboratories" paradigm, using only local operations and classical communication. We apply this procedure to spectrum estimation of shared states, and locally implementable structural physical approximations to incompletely positive maps. This procedure can also be applied to the estimation of channel capacity and measures of entanglement

Zeeman splittings of the 5D0–7F2 transitions of Eu3+ ions implanted into GaN

We report the magnetic field splittings of emission lines assigned to the 5D0–7F2 transitions of Eu3+ centres in GaN. The application of a magnetic field in the c-axis direction (B||c) leads to a splitting of the major lines at 621 nm, 622 nm and 622.8 nm into two components. The Zeeman splitting is linear with magnetic field up to 5 Tesla for each line. In contrast, a magnetic field applied in the growth plane (B┴c) does not influence the photoluminescence spectra. The estimated g-factors vary slightly from sample to sample with mean values of g|| ~2.8, ~1.5 and ~2.0 for the emission lines at 621 nm, 622 nm and 622.8 nm respectively

Signals for New Spin-1 Resonances in Electroweak Gauge Boson Pair Production at the LHC

The mechanism of electroweak symmetry breaking (EWSB) will be directly scrutinized soon at the CERN Large Hadron Collider (LHC). We analyze the LHC potential to look for new vector bosons associated with the EWSB sector. We present a possible model independent approach to search for these new spin--1 resonances. We show that the analyses of the processes pp --> l^+ l^- Emiss_T, l^\pm j j Emiss_T, l^\pm l^+ l^- Emiss_T, and l^+ l^- j j (with l=e or \mu and j=jet) have a large reach at the LHC and can lead to the discovery or exclusion of many EWSB scenarios such as Higgsless models.Comment: 10 pages, 11 figure

Aplicação de nitrogênio em cobertura no arroz irrigado monitorada com o uso do sensor portátil.

Objetivou-se com este estudo determinar o desempenho da cultivar BRS Tropical de arroz irrigado influenciado pela segunda aplicação em cobertura de doses de duas fontes de N baseada no uso do clorofilômetro

Desempenho do arroz irrigado influenciado pela adubação nitrogenada baseada no uso do clorofilômetro.

O objetivo deste estudo foi determinar a influência da segunda aplicação em cobertura de doses de duas fontes de N baseada no uso do clorofilômetro no desempenho da cultivar BRS Tropical de arroz irrigado.Pôster - graduação

Optical energies of AllnN epilayers

Optical energy gaps are measured for high-quality Al1−xInxN-on-GaN epilayers with a range of compositions around the lattice match point using photoluminescence and photoluminescence excitation spectroscopy. These data are combined with structural data to determine the compositional dependence of emission and absorption energies. The trend indicates a very large bowing parameter of 6 eV and differences with earlier reports are discussed. Very large Stokes' shifts of 0.4-0.8 eV are observed in the composition range 0.13<x<0.24, increasing approximately linearly with InN fraction despite the change of sign of the piezoelectric fiel

Organização do trabalho familiar do espaço rural paraense: novos arranjos na organização do trabalho e na gestão das unidades de produção.

O objetivo do artigo é apresentar uma interpretação acerca da organização do trabalho dos membros das famílias em unidades de produção na comunidade Nossa Senhora de Lourdes identificando novas estratégias de produção e reprodução familiar frente ao contexto de limitações de recursos naturais. As reflexões aqui apresentadas são resultantes de uma pesquisa realizada com famílias agricultoras da comunidade Nossa Senhora de Lourdes localizada no Assentamento Itabocal, município de Mãe do Rio, nordeste paraense. Trata-se de um estudo de caso, realizado a partir de abordagens quantitativas e qualitativas cujas principais categorias de análises são a família, trabalho e seus meios de produção. Os principais resultados mostram que o padrão de exploração do meio natural estabelecido através da agricultura de corte e queima ao longo dos anos nas áreas que compõem a comunidade têm ocasionado problemas associados ao esgotamento de recursos naturais nas unidades de produção familiares e com isso influenciado nos arranjos que se instituem no âmbito do trabalho

A universal quantum estimator

Almost all computational tasks in the modem computer can be designed from basic building blocks. These building blocks provide a powerful and efficient language for describing algorithms. In quantum computers, the basic building blocks are the quantum gates. In this tutorial, we will look at quantum gates that act on one and two qubits and briefly discuss how these gates can be used in quantum networks