论文标题
Upsilon Energy地区的Charmed Meson的生产和腐烂
Production and Decay of Charmed Mesons in the Upsilon Energy Region
论文作者
论文摘要
我们研究了Continuum $ \ rm {e^+} {e^ - } $ andihiliations在Continuum $ \ rm中生产的Charmed，nonstrange，$ \ rm d $介子的属性。 $ \ rm {e^+} {e^ - } $碰撞是在Cornell Electron存储环的$ \Rmυ（3s）$和$ \rmυ（4s）$共振的能源区域中生成的，并由Cleo检测器分析。我们对衰减拓扑$ \ rm d^0，d^+ \ rightArrow \ overline {\ rm k}^{_ {_ 0}} x $进行广泛研究\rightarrowπ^+π^ - $。还考虑了衰减$ \ rm d^+ \ rightarrow k^-π^+π^ - $。我们分析了Charmed Quarks成为迷人的Hadron的强发化过程。我们测量在非零角动量状态下产生迷人的介子的可能性。 $ \ rm d^0 $和$ \ rm d^+$碎片分布的比较是对不同的片段化模型以及其他迷人的黑龙的比较。估计了对几种$ \ rm d^+$衰减模式的相对产生的测量，并估计了总$ \ rm d^0 $和$ \ rm d^+$ cross段。提出了用于分析卫星质量峰和$ \ rm d^+ \ leftrightArrow d^{+} _ {s} $反射的技术。我们在迷人的介子的弱衰减中搜索非光谱的效果，并在$ \ rm d^0 $衰减中搜索Hadronic最终状态相互作用的证据。
We study the properties of charmed, nonstrange, $\rm D$ mesons produced in continuum $\rm {e^+}{e^-}$ annihilations. The $ \rm {e^+}{e^-}$ collisions were generated in the energy region of the $ \rm Υ(3S)$ and $ \rm Υ(4S)$ resonances by the Cornell Electron Storage Ring, and were analyzed by the CLEO detector. We make extensive study of the decay topology $\rm D^0, D^+ \rightarrow \overline{\rm K}^{_{_0}}X$, where the $\overline{\rm K}^{_{_0}}$ is observed in the final state $\rm K^{0}_{S} \rightarrow π^+π^-$. The decay $ \rm D^+ \rightarrow K^- π^+π^-$ is also considered. We analyze the hadronization process through which charmed quarks become charmed hadrons. We measure the probability that a charmed meson will be produced in a state of non zero angular momentum. A comparison of the $\rm D^0$ and $\rm D^+$ fragmentation distributions is made to different fragmentation models, and to other charmed hadrons. A measurement of the relative production of several $\rm D^+$ decay modes is made, and the total $\rm D^0$ and $\rm D^+$ cross sections are estimated. Techniques are presented for the analysis of satellite mass peaks and $\rm D^+ \Leftrightarrow D^{+}_{s}$ reflections. We search for nonspectator effects in the weak decays of charmed mesons, and for evidence of hadronic final state interactions in $\rm D^0$ decay.
