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Showing 1 to 3 of 3 for “"Flavor Changing Neutral Currents"”.
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Search for flavor changing neutral currents in top quark decays using a two-leptons+track selection
A search for flavor-changing neutral currents in top quark decays is described. Data collected at a center- of-mass energy of √s = 7 TeV during 2011 corresponding to an integrated luminosity of 2.1 fb^{-1} are used. A cut-based analysis is used on top quark pair production events, where one top …
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Beyond the Standard Model: New scalars and new leptons
… extensions of the standard model, tree-level flavor-changing neutral currents exist naturally. It is often believed that the presence of the tree-level FCNC in this model is fatal, unless a discrete symmetry is added, since it requires the exchanged scalar to be extremely heavy. This follows, …
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SEARCH FOR THE RARE DECAY OF A B MESON TO A K MESON AND TWO NEUTRINOS
… nubar in a sample of 9.7 million charged and neutral B meson decays recorded by the CLEO detector at the Y(4S)resonance. The technique was one of full event reconstruction where after electing a signal B candidate the remainder of the event is required to be consistent with a hadronic B -> …