296 research outputs found

    Systematics of heavy quarkonia from Regge trajectories on (n,M2)(n,M^2) and (M2,J)(M^2,J) planes

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    In this paper we show that heavy quarckonium states, similar to light mesons, form Regge trajectories in (n,M2)(n,M^2) and (M2,J)(M^2,J) planes and the slope of these trajectories is independent on the quantum numbers of the mesons. This fact can be useful for the prediction of the masses of heavy quarkonia and the determination of the quantum numbers of the newly discovered states.Comment: 10 pages, 2 figures, 2 tables; some refrences are added, comparison with QCD sum rules result is presente

    Parallelization of sequential programs: distribution of arrays among processors and structurization of communications

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    Data distribution functions are introduced. They are matced with scheduling functions. The processors and iterations are determined that use an array element at its fixed position in a statement. This makes it possible to obtain the initial data distribution and also information on the data volume for every processor and on the structure of required communication

    QCD one-loop correction to Higgs boson decay into quarkonium-pair

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    Rare decays of the Higgs boson into quarkonia-pairs are studied within the framework of NRQCD approach. The main decay mechanisms and their interference are studied in detail. One-loop corrections to the widths of these decays are taken into account for the first time.Comment: Minor changes for the text. Has been accepted by Phys. Rev.

    Prospects for the Bc Studies at LHCb

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    We discuss the motivations and perspectives for the studies of the mesons of the (bc) family at LHCb. The description of production and decays at LHC energies is given in details. The event yields, detection efficiencies, and background conditions for several Bc decay modes at LHCb are estimated.Comment: 20 pages, 5 eps-figure
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