66 research outputs found

    O sucesso de três anos do serviço IBGEPPP

    Get PDF
    Até o início de 2009, os pro ssionais que fazem uso das técnicas de posicionamento por satélites no desenvolvimento de suas atividades necessitavam de um programa de processamento de observações GPS gratuito, que calculasse de forma precisa as coordenadas dos levantamentos realizados. Em abril desse mesmo ano, o IBGE através da Coordenação de Geodésia, disponibilizou o serviço online IBGE-PPP, atendendo essa demanda e se tornando o primeiro país da América Latina a oferecer esse serviço gratuitamente. Em três anos de funcionamento, o IBGE-PPP já atendeu mais de 9.500 usuários, processando 127.352 arquivos de observações GPS. Este trabalho apresenta as principais características do serviço, além de fazer uma avaliação dos processamentos realizados pelos usuários, a precisão obtida nos processamentos,bem como as futuras implementações visando melhores resultados

    Search for leptophobic Z ' bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV

    Get PDF
    Peer reviewe

    Search for black holes and other new phenomena in high-multiplicity final states in proton-proton collisions at root s=13 TeV

    Get PDF
    Peer reviewe

    Search for high-mass diphoton resonances in proton-proton collisions at 13 TeV and combination with 8 TeV search

    Get PDF
    Peer reviewe

    Search for heavy resonances decaying into a vector boson and a Higgs boson in final states with charged leptons, neutrinos, and b quarks

    Get PDF
    Peer reviewe

    Particle-flow reconstruction and global event description with the CMS detector

    Get PDF

    Search for single production of a heavy vector-like T quark decaying to a Higgs boson and a top quark with a lepton and jets in the final state

    Get PDF
    A search for single production of vector-like top quark partners (T) decaying into a Higgs boson and a top quark is performed using data from pp collisions at a centre-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 2.3 fb−1. The top quark decay includes an electron or a muon while the Higgs boson decays into a pair of b quarks. No significant excess over standard model backgrounds is observed. Exclusion limits on the product of the production cross section and the branching fraction are derived in the T quark mass range 700 to 1800 GeV. For a mass of 1000 GeV, values of the product of the production cross section and the branching fraction greater than 0.8 and 0.7 pb are excluded at 95% confidence level, assuming left- and right-handed coupling of the T quark to standard model particles, respectively. This is the first analysis setting exclusion limits on the cross section of singly produced vector-like T quarks at a centre-of-mass energy of 13 TeV
    corecore