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• W2004660305 abstract "We examine the production and decay of a supersymmetric scalar top t${ifmmode tilde{}else ~{}fi{}}_{1}$ at ${e}^{+}$${e}^{mathrm{ensuremath{-}}}$ colliders such as TRISTAN at KEK, the Stanford Linear Collider, and LEP at CERN, based on supersymmetric models with soft breaking. Existing bounds for supersymmetric particles imply that t${ifmmode tilde{}else ~{}fi{}}_{1}$ in the energy range of these colliders would be lighter than other scalar quarks and than the top quark. We make a careful study of available t${ifmmode tilde{}else ~{}fi{}}_{1}$ decay modes in this scenario. The flavor-changing decay t${ifmmode tilde{}else ~{}fi{}}_{1}$ensuremath{rightarrow}censuremath{gamma}ifmmode tilde{}else ~{}fi{} is found to proceed through the misalignment of the scalar-quark and quark mixing matrices. If the three-body decay t${ifmmode tilde{}else ~{}fi{}}_{1}$ensuremath{rightarrow}${mathrm{bl}}^{+}$ensuremath{nu}ifmmode tilde{}else ~{}fi{} is kinematically accessible it dominates the two-body decay. The decay t${ifmmode tilde{}else ~{}fi{}}_{1}$ensuremath{rightarrow}bensuremath{nu}l${ifmmode tilde{}else ~{}fi{}}^{+}$ is even larger due to different chirality structure, but is likely to suffer from a large phase-space suppression. Four-body decays are negligible. The t${ifmmode tilde{}else ~{}fi{}}_{1}$ pair production cross section including the ensuremath{gamma} and Z contribution and the left-right mixing is presented." @default.
• W2004660305 created "2016-06-24" @default.
• W2004660305 creator A5056736617 @default.
• W2004660305 creator A5075866404 @default.
• W2004660305 date "1987-08-01" @default.
• W2004660305 modified "2023-09-24" @default.
• W2004660305 title "Light scalar top quark at<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant=normal>−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>colliders" @default.
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• W2004660305 doi "https://doi.org/10.1103/physrevd.36.724" @default.
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