23 research outputs found

    Measurement of the production cross section for a W boson and two b jets in pp collisions at root s=7 TeV

    Get PDF
    The production cross section for a W boson and two b jets is measured using proton&#8211;proton collisions at s=7 TeV in a data sample collected with the CMS experiment at the LHC corresponding to an integrated luminosity of 5.0 fb &#8722;1 . The W+bb¯ events are selected in the W&#8594;&#956;&#957; decay mode by requiring a muon with transverse momentum pT>25 GeV and pseudorapidity |&#951;|25 GeV and |&#951;|<2.4 . The measured W+bb¯ production cross section in the fiducial region, calculated at the level of final-state particles, is &#963;(pp&#8594;W+bb¯)×B(W&#8594;&#956;&#957;)=0.53±0.05(stat.)±0.09(syst.)±0.06(theo.)±0.01(lum.) pb , in agreement with the standard model prediction. In addition, kinematic distributions of the W+bb¯ system are in agreement with the predictions of a simulation using MadGraph and pythia

    Searches for light- and heavy-flavour three-jet resonances in pp collisions at root s=8 TeV

    Get PDF

    Mudança organizacional: uma abordagem preliminar

    Full text link

    Microstructural coarsening of the PbAg eutectic

    No full text
    The coarsening behaviour of PbAg eutectic alloys has been investigated under isothermal and temperature gradient environments. No evidence was found for fibre migration or fibre coalescence. Under both isothermal and temperature gradient conditions the rate of coarsening occurred with an activation energy equivalent to the sum of the activation energies for self-diffusion of lead and dissolution of silver in lead

    თამარ თუხარელი-ფალავანდიშვილი მეუღლესთან, სამსონ ფალავანდიშვილთან ერთად

    No full text
    corecore