论文标题
$λ_{q} $的SVZ总规则和重夸克限制
The SVZ sum rules and the heavy quark limit for $Λ_{Q}$
论文作者
论文摘要
在这项工作中，我们评估了领先顺序的准确性，导致Shifman-Vainshtein-Zakharov（SVZ）总和规则和领先的功率导致质量为$λ_{q} $的重量夸克限制。考虑到DIM-5的冷凝水贡献。通过与实验结果进行比较，我们发现以$λ_{b} $和$λ_{C} $的价格达到SVZ总规则中的领先顺序结果可以达到5 \％的准确性，并且似乎可以从$λ_{B} $和$λ__{C C} $的重量Quark限制的总和限制的总和中获得更好的结果。我们重新检查SVZ总和在重夸克限制中规则与HQET总和规则一致。作为副产品，我们还对$λ_{q} $的$ ud $ diquark进行了探索性讨论。
In this work, we evaluate the accuracy of the leading order results in Shifman-Vainshtein-Zakharov (SVZ) sum rules and the leading power results in the heavy quark limit for the mass of $Λ_{Q}$. Up to dim-5 condensate contributions are considered. By comparing with the experimental results, we find that the leading order results in SVZ sum rules can reach about 5\% accuracy both for $Λ_{b}$ and $Λ_{c}$, and it seems that better results can be obtained from the sum rules of the heavy quark limit both for $Λ_{b}$ and $Λ_{c}$. We re-check that the SVZ sum rules in the heavy quark limit coincide with the HQET sum rules. As a byproduct, we also have an exploratory discussion on the $ud$ diquark in $Λ_{Q}$.
