Browsing by Subject "D mesons"

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    Measurement of radiative D meson decays at CLEO-c
    (2008-08) Klein, Timothy Maxwell
    Using 818 pb -1 e + e - annihilations at a center-of-mass energy of 3.774 GeV at the CLEO-c detector we have conducted a search for all predicted radiative D 0 decays. In the search for D 0 [arrow right] K*γ we observe [Special characters omitted.] (D 0 [arrow right] K*γ ) = [4.37±0.35±0.52]×10 -4 where the first error is statistical and the second error is systematic. In the search for D 0 [arrow right] [straight phi]γ we observe [Special characters omitted.] (D 0 [arrow right] [straight phi]γ) = [2.21±0.95±0.29]×10 -5 . In the search for D 0 [arrow right] γγ we find no evidence of a signal and set an improved 90% confidence UL of [Special characters omitted.] (D 0 [arrow right] ρ 0 γ) < 3.63×10 -5 . In the search for D 0 [arrow right] ωγ we find no evidence of a signal and set an improved 90% confidence UL of [Special characters omitted.] (D 0 [arrow right] ωγ) < 3.00 × 10 -5 .