Tests of direct and indirect $\text{CPT}$ violation at a $\text{B}$ factory

Abstract

The issue of testing CPT invariance at a B factory is considered. We present asymmetries that permit a clean extraction of quantities parametrizing direct and indirect CPT violation, using information from ϒϒ(4S) decay via coherent BdB―d pairs into various final states. Estimates are given of the bounds on CPT violation that could be obtained in present and planned machines.