论文标题
使用重型介子手性扰动理论估算$ b \ toπ$形式的激发态污染
Estimating excited states contamination of $B \to π$ form factors using heavy meson chiral perturbation theory
论文作者
论文摘要
使用重型梅森手性扰动理论（HMCHPT），在手性膨胀和静态限制中计算出$ b^*π$激发状态对$ b \ toπ$ vector形式量的污染。结果表明，$ H_ \ Parallel $的激发状态为几个百分点，而$ H_ \ PERP $收到了很大的负贡献，因此在晶格模拟中可能会大大低估。
Using Heavy Meson Chiral Perturbation Theory (HMChPT), the $B^* π$ excited states contamination of the $B \to π$ vector form factors is computed to NLO in the chiral expansion and in the static limit. The results suggest that the excited states for $h_\parallel$ are of the order of a few percent whereas $h_\perp$ receives large negative contributions and thus might be significantly underestimated in lattice simulations.
