Analysis of the recent data of exclusive two-body charm decays

Based on the revised Mark III data and recent measurements of D s + decay, two-body decays of charmed mesons are reanalyzed in the quark-diagram scheme. The observation of D s → K ∗0 K + when combined with the data of D +→ φπ + reveals the importance of the W-annihilation diagram in D→VP decays. The...

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Bibliographic Details
Published in:Physics letters. B 1989-05, Vol.222 (2), p.285-292
Main Authors: Chau, Ling-Lie, Cheng, Hai-Yang
Format: Article
Language:English
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Summary:Based on the revised Mark III data and recent measurements of D s + decay, two-body decays of charmed mesons are reanalyzed in the quark-diagram scheme. The observation of D s → K ∗0 K + when combined with the data of D +→ φπ + reveals the importance of the W-annihilation diagram in D→VP decays. The new measurement of D s +→ K 0 K + together with the data of D +→ K 0π +, K 0 K + implies the smallness of the W-loop diagram in charm decay. We also find that the data of D→PP (two pseudo mesons) cannot be accommodated without including the contributions of W-exchange and/or W-annihilation diagrams; this gives a hint for the importance of these nonspectator diagrams in D→PP decays. Predictions are made based upon these most recent data from our quark-diagram scheme.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(89)91267-7