Inclusive Studies Of D-Meson Decays At Psi-(3772)

PHYSICAL REVIEW LETTERS(1978)

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摘要
We have measured charged multiplicities, inclusive branching ratios to states containing kaons, and average energy fractions in charged and neutral particles for decays of $D$ mesons produced at the $\ensuremath{\psi}(3772)$ resonance. The average charged multiplicity is 2.3\ifmmode\pm\else\textpm\fi{}0.3 for both the neutral and the charged $D$. We find inclusive branching ratios $B({D}^{0}\ensuremath{\rightarrow}{K}^{\ifmmode\pm\else\textpm\fi{}}X)=0.35\ifmmode\pm\else\textpm\fi{}0.10$ and $B({D}^{+}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}X)=0.10\ifmmode\pm\else\textpm\fi{}0.07$ for decays into charged kaons.
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elementary particles,charged particles
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