Study of Discrete Symmetries for Bs Meson System

At B factories, discrete symmetries have been studied using double tagging method for entangled B meson states. In this work, we analyse the same asymmetries for eson system. We also discuss the complexity in this case over B meson. Expressions are derived in terms of two complex parameters, nd which govern CP/CPT/T violation in the system. Method of constraining these parameters has also been discussed.