Triple product correlations in top squark decays

Abstract

We propose several T-odd asymmetries in the decay chains of the top squarks $\tilde t_m \to t \tilde χ^0_k$ and $t\to bW^+\to blν$ and $\tildeχ^0_k \to l^\pm\tilde l_n^\mp \to l^\pm l^\mp\tildeχ^0_1$, for $l =e,μ,τ$. We calculate the asymmetries within the Minimal Supersymmetric Standard Model with complex parameters $M_1$, $μ$ and $A_t$. We give the analytic formulae for the decay distributions. We present numerical results for the asymmetries and estimate the event rates necessary to observe them. The largest T-odd asymmetry can be as large as 40%.