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Nayak, M.; Libby, J.; Malde, S.; Thomas, C.; Wilkinson, G.; Briere, R.A.; Naik, P.; Gershon, T.; Bonvicini, G.
Physics letters. B, 01/2015, Volume: 740Journal Article
Quantum-correlated ψ(3770)→DD¯ decays collected by the CLEO-c experiment are used to perform first measurements of F+, the fractional CP-even content of the self-conjugate decays D→π+π−π0 and D→K+K−π0. Values of 0.968±0.017±0.006 and 0.731±0.058±0.021 are obtained for π+π−π0 and K+K−π0, respectively. It is demonstrated how modes of this sort can be cleanly included in measurements of the unitarity triangle angle γ using B∓→DK∓ decays. The high CP-even content of D→π+π−π0, in particular, makes this a promising mode for improving the precision on γ.
