We present evidence for mixing in decays from of colliding-beam data recorded near with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters and and a correlation between them of . This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure , the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be . We find no evidence for violation.
- Received 9 March 2007
©2007 American Physical Society