Phys. Rev. Lett. 65, 1184–1187 (1990)Study of the decays D0→KK¯, ππ¯Received 13 June 1990; published in the issue dated 3 September 1990 Using the CLEO detector we have observed the Cabibbo-suppressed decays D0→K0K¯0, K+K-, and π+π-. We determine B(D0→K0K¯0)= (0.13-0.05-0.02+0.07+0.02)%. Our measurement B(D0→K+K-)/B(D0→π+π-)=2.35±0.37±0.28 represents asubstantial improvement over previous results. We find no evidence for the decay D0→π0π0, and place a 90%-confidence-level upper limit of B(D0→π0π0)<0.46%. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.65.1184
DOI:
10.1103/PhysRevLett.65.1184
PACS:
13.25.+m, 14.40.Jz
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