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

Abstract

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