2,483 research outputs found

    Search for Anomalous Top--Quark Interaction at LEP-2 Collider

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    We show that a search for e+etqˉe^+ e^- \to t \bar q (qˉ=cˉ,uˉ)(\bar q = \bar c, \bar u) events at LEP--2 collider provide a possibility to improve significantly the modern constraints on coupling constants of anomalous tt--quark interaction via flavor--changing neutral currents.Comment: 12 pages, LaTeX, epsfig, 4 figures. Corrected typo

    Phenomenon of "consciousness splitting" in philosophy and medicine

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    An evaluation of |Vus| and precise tests of the Standard Model from world data on leptonic and semileptonic kaon decays

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    We present a global analysis of leptonic and semileptonic kaon decay data, including all recent results published by the BNL-E865, KLOE, KTeV, ISTRA+ and NA48 experiments. This analysis, in conjunction with precise lattice calculations of the hadronic matrix elements now available, leads to a very precise determination of |Vus| and allows us to perform several stringent tests of the Standard Model.Comment: LaTeX, 25 pages, 12 figures, 16 tables. Submitted to EPJC. v2: Minor changes for accepted version. No numerical results change

    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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