论文标题
单身迷人的Hadron的生命
Lifetimes of singly charmed hadrons
论文作者
论文摘要
我们在重度夸克扩张中提供了对单人迷人的重子和介子的寿命进行的广泛研究，其中包括所有已知的校正。特别关注重型重子的魅力质量和波形。我们对单身诱人的重子的生命，终生比率和半抑制的分支比例给出了预测。我们的结果可容纳单一迷人的Baryon Lifetimes \ Begin {eqnarray*}τ\ left（ξ_c^{0} \ right）<τ\ left（λ_c^{+} τ\ left（ξ_c^{+} \ right）\，\ end {eqnarray*}与早期的理论发现相反。诱人的梅森寿命和半衰减衰减率的预测与最近的全面研究和不确定性中的实验结果一致。
We provide an extensive study of the lifetimes of singly charmed baryons and mesons, within the heavy quark expansion with all known corrections included. A special attention is devoted to the choice of the charm mass and wavefunctions of heavy baryons. We give our predictions for lifetimes, lifetime ratios, and semileptonic branching ratios of singly charmed baryons. Our results accommodate the experimentally-favoured hierarchy of singly charmed baryon lifetimes \begin{eqnarray*} τ\left(Ξ_c^{0}\right) < τ\left(Λ_c^{+}\right)< τ\left(Ω_c^{0}\right) < τ\left(Ξ_c^{+}\right)\, \end{eqnarray*} in contrast to earlier theoretical findings. Predictions for charmed meson lifetimes and semileptonic decay rates are in agreement with a recent comprehensive study and experimental results within uncertainties.
