Implementation and Performance of the ATLAS Jet Trigger

This work presents the challenges of the ATLAS jet trigger and describes its implementation and expected performance. The ATLAS trigger is organized in three levels: the first one (L1) is implemented in custom made electronic modules, while the High-Level Trigger (HLT) system, which groups the second (L2) and third (Event Filter, EF) trigger levels, is based on software running in commercial computers. Both L1 and the HLT perform reconstruction of physic objects, like leptons, photons or jets. A precise hadronic calibration is applied at the HLT with the aim of accurately determining the jet energy. This optimizes the behavior of our selection criteria. A dedicated calibration scheme is implemented at L2, while the EF uses offline algorithms. We discuss the strategies used to perform the hadronic calibration for the HLT. We review the current physics signatures, expected rates and efficiencies as obtained from MC studies

Implementation and Performance of the ATLAS Jet Trigger

The ATLAS trigger is organized in three levels: the first one (LVL1) is hardware based, while the High-Level Trigger (HLT) system, which groups the second (LVL2) and third (Event Filter, EF) trigger levels, is software based. The ATLAS jet trigger must accurately measure the jet energy, to distinguish high pT jets from low pT ones. Hadronic calibration is applied at HLT: a dedicated calibration scheme is implemented at LVL2, while the EF uses offline algorithms. This poster presents the challenges of the ATLAS jet trigger and describes its implementation and expected performance. We review the current physics signatures, expected rates and efficiencies as obtained from MC studies. We discuss the strategies used to perform the hadronic calibration for the HLT

Spatial multicriteria decision analysis to potential beekeeping assessment. Case study: Montesinho Natural Park (Portugal)

The Multicriteria decision analysis is a tool to support decision-making in the identification of areas with the utmost beekeeping potential. This paper design a GIS multicriteria approach to assess the beekeeping potential. The development of a conceptual model structure requires the participation of stakeholders and experts in that process. The spatial Multicriteria Decision Analysis (MCDA) allowed defining the potential beekeeping map. The resulting maps can be used by the beekeepers associations to easily select the more suitable areas for the apiaries location or relocation and avoid prohibited areas by legal requirements

Resonant and nonresonant D+ -> K- pi+ l+ nu(l) semileptonic decays

We analyse the semileptonic decay D+ -> K- pi+ l+ nu(l) using an effective Lagrangian developed previously to describe the decays D -> P l nu(l) and D -> V l nu(l). Light vector mesons are included in the model which combines the heavy quark effective Lagrangian and chiral perturbation theory approach. The nonresonant and resonant contributions are compared. With no new parameters the model correctly reproduces the measured ratio Gamma(nres)/Gamma(nres + res). We also present useful nonresonant decay distributions. Finally, a similar model, but with a modified current which satisfies the soft pion theorems at the expense of introducing another parameter, is analyzed and the results of the models are compared.Comment: 17 pages, 3 Postscript figures, standard Latex, extended revision, title, abstract and text (especially Sec. IV) changed, results unchange

Microvespa-do-eucalipto-citriodora (Corymbia citriodora) - Epichrysocharis burwelli Schauff (Hymenoptera: Eulophidae).

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Psilídeos no Brasil: 8 - Mastigimas anjosi (Hemiptera, Psylloidea), nova praga da Toona ciliata no Brasil.

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Heavy Quark Symmetry Violation in Semileptonic Decays of D Mesons

The decays of $D$ mesons to $K l \nu$ and $K^* l \nu$ final states exhibit significant deviations from the predictions of heavy-quark symmetry, as one might expect since the strange quark's mass is of the same order as the QCD scale. Nonetheless, in order to understand where the most significant effects might lie for heavier systems (such as $B \to D l\nu$ and $B \to D^* l\nu$), the pattern of these deviations is analyzed from the standpoint of perturbative QCD and ${\cal O}(1/m_s)$ corrections. Two main effects are noted. First, the perturbative QCD corrections lead to an overall decrease of predicted rates, which can be understood in terms of production of excited kaonic states. Second, ${\cal O}(1/m_s)$ effects tend to cancel the perturbative QCD corrections in the case of $Kl\nu$ decay, while they have minimal effect in $K^*l\nu$ decay.Comment: 25 pages (LaTeX) + 7 pages of Postscript figures (included at end), EFI-92-3

Utilização de SIG “open souce” no ordenamento apícola. Caso de estudo: área controlada de Castelo Branco.

Utilização de SIG “open souce” no ordenamento apícola. Caso de estudo: área controlada de Castelo Branco.info:eu-repo/semantics/publishedVersio

Psyllaephagus trioziphagus (Howard, 1885) (Hym.: Encyrtidae), novo parasitoide de Mastigimas anjosi Burckhardt et al., 2011 (Hemiptera: Psylloidea: Calophyidae).

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