313 research outputs found

    QED Penguin Contributions To Isospin Splittings of Heavy-Light Quark Systems

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    Recent experiments show that the isospin-violating mass splitting of the B mesons is very small, but the best fits with a QCD sum rule analysis give a splitting of at least 1.0 MeV. The isospin-violating mass splittings of the charmed mesons, on the other hand, are in agreement with experiment. In this letter we show that the inclusion of 2nd^{nd} kind QED penguin diagrams can account for this discrepancy within the errors in the QCD sum rule method.Comment: 9 pages, latex, 2 figure

    Sigma and Pion Decays of Mixed Heavy Hybrids

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    We estimate the relative branching ratio of σ\sigma to 2π\pi for the decay of the Ψ′(2S)\Psi'(2S), which we have found to be a mixed charm and hybrid charmonium meson. The external field method and correlators from a previous calculation are used to estimate these decays. We find the σ\sigma to 2π\pi branching ratio for Ψ′(2S)\Psi'(2S) to the J/Ψ(1S)J/\Psi(1S) decay to be 0.98, in agreement with an experiment at IHEP-BES.Comment: 8 pages, 6 figure

    Heavy Quark State Production In p-p Collisions

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    We estimate the relative probabilities of Ψ′(2S)\Psi'(2S) to J/ΨJ/\Psi production at BNL-RHIC and Υ(nS)\Upsilon(nS) production at the LHC and Fermilab in p-p collisions, using our recent theory of mixed heavy quark hybrids, in which the Ψ′(2S)\Psi'(2S) and Υ(3S)\Upsilon(3S) mesons have approximately equal normal qqˉq\bar{q} and hybrid qqˉgq\bar{q}g components.Comment: 15 pages, 10 figure
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