2,483 research outputs found
Search for Anomalous Top--Quark Interaction at LEP-2 Collider
We show that a search for
events at LEP--2 collider provide a possibility to improve significantly the
modern constraints on coupling constants of anomalous --quark interaction
via flavor--changing neutral currents.Comment: 12 pages, LaTeX, epsfig, 4 figures. Corrected typo
An evaluation of |Vus| and precise tests of the Standard Model from world data on leptonic and semileptonic kaon decays
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
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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