EPJ

2023 Impact factor 4.2
EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 12, 125-135
DOI 10.1007/s100529900211

CP violation in semi-leptonic decays
of the top quark within MSSM

X.-J. Bi, Y.-B. Dai

Institute of Theoretical Physics, Academia Sinica, P.O. Box 2735, Beijing 100080, P.R. China

Received: 19 April 1999 / Published online: 16 November 1999

Abstract
We calculate the CP violating effects in the top quark semi-leptonic three body decays induced by the supersymmetric CP-odd phase of the top squark trilinear soft breaking term $\arg(A_t)$. The light top squark mass is assumed to be close to the top quark mass, $m_{\tilde{t}}\sim m_t$. The CP conserving phase is provided by the $\chi^+$ and $\chi^0$ cut. We find that the partial rate asymmetry is on the 0.1% level. In the most favorable parameter region the decay rate asymmetry can reach up to 0.55%.

Copyright Springer-Verlag 2000

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