Abstract
We have studied the “wrong-sign” process to search for mixing. The data come from of collisions at recorded with the CLEO II.V detector. We measure the relative rate of the wrong-sign process to the Cabibbo-favored process to be . We study as a function of decay time to distinguish direct doubly Cabibbo-suppressed decay from mixing. The amplitudes that describe mixing, and , are consistent with zero. At the C.L. and without assumptions concerning charge-parity ( ) violating parameters, we find and .
- Received 3 January 2000
DOI:https://doi.org/10.1103/PhysRevLett.84.5038
©2000 American Physical Society