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Showing 1 to 4 of 4 for “"Flavor changing neutral current"”.
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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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Observation of b → dγ decays and determination of |V<sub>td</sub>/V<sub>ts</sub>|
The flavor changing neutral current process b → dγ is a sensitive probe to the Standard Model of elementary particle physics. Using a sample of 386 × 10⁶ B meson pairs accumulated by the Belle detector at the KEKB e⁺e⁻ collider, we measure the branching fractions for the exclusive modes B⁻ → ρ⁻γ, …
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Brane worlds, brane worlds : it's party time : excellent
… of the fields. This spectrum is also largely flavor blind, and thus does not suffer from flavor changing neutral current problems. Anomaly mediation, however, predicts negative slepton mass squardes. In this thesis we will try to address this problem by providing positive contributions to the …