195 research outputs found

    Fluctuations and scaling of inverse participation ratios in random binary resonant composites

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    We study the statistics of local field distribution solved by the Green's-function formalism (GFF) [Y. Gu et al., Phys. Rev. B {\bf 59} 12847 (1999)] in the disordered binary resonant composites. For a percolating network, the inverse participation ratios (IPR) with q=2q=2 are illustrated, as well as the typical local field distributions of localized and extended states. Numerical calculations indicate that for a definite fraction pp the distribution function of IPR PqP_q has a scale invariant form. It is also shown the scaling behavior of the ensemble averaged described by the fractal dimension DqD_q. To relate the eigenvectors correlations to resonance level statistics, the axial symmetry between D2D_2 and the spectral compressibility χ\chi is obtained.Comment: 7 pages, 6 figures, accepted by Physical Review

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

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    Measurements of differential production cross sections for a Z boson in association with jets in pp collisions at root s=8 TeV

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

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

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    Search for the associated production of the Higgs boson with a top-quark pair

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    A search for the standard model Higgs boson produced in association with a top-quark pair t t ¯ H (tt¯H) is presented, using data samples corresponding to integrated luminosities of up to 5.1 fb −1 and 19.7 fb −1 collected in pp collisions at center-of-mass energies of 7 TeV and 8 TeV respectively. The search is based on the following signatures of the Higgs boson decay: H → hadrons, H → photons, and H → leptons. The results are characterized by an observed t t ¯ H tt¯H signal strength relative to the standard model cross section, μ = σ/σ SM ,under the assumption that the Higgs boson decays as expected in the standard model. The best fit value is μ = 2.8 ± 1.0 for a Higgs boson mass of 125.6 GeV

    Identification techniques for highly boosted W bosons that decay into hadrons

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