Supersymmetric Electroweak Corrections to the Chargino Decay into Neutralino and W Boson

Abstract

We investigated the electroweak corrections from one-loop diagrams involving the third generation (s)quarks to the decay width of process ${\tilde{\chi }}_1^{+}\to W^{+}{\tilde{\chi }}_1^0$ in the framework of the Minimal Supersymmetric Standard Model. Our calculation shows that these corrections are not very sensitive to the mass of the lightest neutralino ${\tilde{\chi }}_1^0$ and the sbottom mixing angle ${\theta }_b$, but depend strongly on the top squark mixing angle ${\theta }_t$ and tan$\beta$. With our chosen parameters, we find that these radiative corrections can exceed 10%, therefore they should be taken into account for the precise experimental measurement at future colliders.

20 pages, 7 eps figures (to be published in J. Phys. G)

References in corpus (3)

• Chargino and Neutralino Decays Revisited
• Gauge dependence of the on-shell renormalized mixing matrices
• Single chargino production via gluon-gluon fusion in a supersymmetric theory with an explicit R-parity violation

Cited by in corpus (5)

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• Electroweak corrections to Neutralino and Chargino decays into a W-boson in the (N)MSSM
• NLO Polarized Chargino pair Production in Electron Positron Annihilation
• The loop effects on the chargino decays ${\tilde{\chi }}_1^{\pm }\to {\tilde{\chi }}_1^{0}f{f}^{\prime }$ in the MSSM