$\hat{I}\yen (4S)\to B^0\overline{B^0}{\hat{I}}^3$ Background at B-Factories

Abstract

We give an estimate of the $C$-even $B^0\overline{B^0}$ background coming from the radiative decay $\hat{I}\yen (4S)\to B^0{\bar{B}}^0{\hat{I}}^3$ at $B$-factories. Our result $B(\hat{I}\yen (4S)\to B^0{\bar{B}}^0{\hat{I}}^3)\simeq 3\times 10^{-9}$ shows that such background could be safely neglected in the analyses of $CP$ violating effects.

RevTex, 8 pages, 1 figure (included)