Measurement of inclusive production ofη,η′andϕmesons inD0,D+andDs+decays

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Abstract

We measure the inclusive branching fractions of charm mesons into three mesons with large $s\overline{s}$ content, namely, the $\ensuremath{\eta}$, ${\ensuremath{\eta}}^{\ensuremath{'}}$ and $\ensuremath{\phi}$. Data were accumulated with the CLEO-c detector. For ${D}^{0}$ and ${D}^{+}$ rates, we use $281\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ taken on the $\ensuremath{\psi}(3770)$ resonance, and for ${D}_{s}^{+}$ rates, we use $195\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ taken at 4170 MeV. We find that the production rates of these particles are larger in ${D}_{s}^{+}$ decays than in ${D}^{0}$ and ${D}^{+}$ decays. The $\ensuremath{\phi}$ rate, in particular, is 15 times greater. These branching fractions can be used to measure ${B}_{s}$ yields either at the $\ensuremath{\Upsilon}(5S)$ resonance or at hadron colliders.

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