Test of CPT symmetry in cascade decays

Cascade mixing provides an elegant place to study the $B^0-\bar{B^0}$ mixing. We use this idea to study the CPT violation caused by $B^0-\bar{B^0}$ mixing. An approximation method is adopted to treat the two complex $B^0-\bar{B^0}$ mixing parameters $θ$ and $ϕ$. A procedure to extract the parameters $θ$ and $ϕ$ is suggested. The feasibility of exploring the CPT violation and determining of $θ$ and $ϕ$ in the future B-factories and LHC-B is discussed.

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