Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-11-14
Phys.Rev.D81:014026,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 7 figures, to be submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.81.014026
A recent update of data on the decays of $D^0$, $D^+$, and $D_s^+$ to pairs of light pseudoscalars calls for a renewed analysis of key decay amplitudes and tests of flavor symmetry. The present data change our previous understanding of relative phases between amplitudes that describe Cabibbo-favored decays of the charmed mesons. The new data also seem to favor a smaller octet-singlet mixing angle for the $\eta$ and $\eta'$ mesons when singly-Cabibbo-suppressed processes are taken into account. We also discuss the effects of the new data on interference between Cabibbo-favored and doubly-Cabibbo-suppressed decays.
Bhattacharya Bhubanjyoti
Rosner Jonathan L.
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