Abstract
We report measurements of and using a time-dependent Dalitz plot analysis of with decays, where the light unflavored and neutral hadron is a , , or meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing and pairs collected at the resonance at the asymmetric-energy factories PEP-II at SLAC and KEKB at KEK, respectively. We measure and . The result for the direct measurement of the angle is . The last quoted uncertainties are due to the composition of the decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics data sample as part of this analysis. We find the first evidence for at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of is ruled out at the level of 5.1 standard deviations, and thus violation is observed in decays. The measurement assumes no direct violation in decays.
3 More- Received 17 April 2018
DOI:https://doi.org/10.1103/PhysRevD.98.112012
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society