Abstract
We report the measurement of the Cabibbo-Kobayashi-Maskawa -violating angle through a Dalitz plot analysis of neutral -meson decays to and produced in the processes , with , , and with , using 468 million pairs collected by the BABAR detector at the PEP-II asymmetric-energy collider at SLAC. We measure (modulo 180°), where the first error is statistical, the second is the experimental systematic uncertainty, and the third reflects the uncertainty in the description of the neutral decay amplitudes. This result is inconsistent with (no direct violation) with a significance of 3.5 standard deviations.
- Received 6 May 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.121801
© 2010 The American Physical Society