18 research outputs found

    Search for long-lived neutral particles in pp collisions at s√=13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter

    Get PDF
    This paper describes a search for pairs of neutral, long-lived particles decaying in the ATLAS calorimeter. Long-lived particles occur in many extensions to the Standard Model and may elude searches for new promptly decaying particles. The analysis considers neutral, long-lived scalars with masses between 5 and 400 GeV, produced from decays of heavy bosons with masses between 125 and 1000 GeV, where the long-lived scalars decay into Standard Model fermions. The analysis uses either 10.8 fb−1 or 33.0 fb−1 of data (depending on the trigger) recorded in 2016 at the LHC with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of 13 TeV. No significant excess is observed, and limits are reported on the production cross section times branching ratio as a function of the proper decay length of the long-lived particles

    Nematóides associados a plantas daninhas na Região de Jaboticabal, SP Nematodes associated with weeds in the Region of Jaboticabal

    No full text
    Realizou-se, na região de Jaboticabal, SP, levantamento dos gêneros e espécies de nematóides fitoparasitos encontrados associados a plantas daninhas de ocorrência muito comum nas principais culturas locais . Para tal, utilizaram-se como materiais, amostras do solo da rizosfera e raízes das plantas daninhas. Foram identificadas 11 espécies de nematóides de interesse agrícola , pertencentes a sete diferentes gêneros, em 19 espécies daninhas.<br>This paper deals with the associations between plant parasitic nematodes and weeds at the region of Jaboticabal, Sao Paulo State, Brazil . Nineteen weed species were included in the survey. Soil c ollected at the rhizosphere zone and roots of weeds constituted the samples for nematological study. Eleven nematode spe cies were identified on the weeds, belonging to seven different genera, namely Helicotylenchus, Macroposthonia, Meloidogyne, Paratrichodorus, Pratylenchus, Rotylenchulus, and Xiphinema
    corecore