Decay Rate Asymmetry of the Top Quark through Light Squarks
Aoki, Mayumi
Original · EN
A decay rate asymmetry of the top quark is discussed within the framework of the supersymmetric standard model. Although new sources of CP violation in this model are severely constrained from the electric dipole moments of the neutron and the electron, there is a possibility that a top squark has a mass of around 100 GeV and CP violation in its interaction with a top quark is unsuppressed. Then partial widths could be different between the decays t→ bW+ and t→ bW-. The magnitude of this CP asymmetry can be of order 10⁻³, which may be detectable in the near future.
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