标题： 同位旋-$\frac{1}{2}$ $Dπ$ 散射和$D_0^*$共振 显示英文标题

标题： Isospin-$\frac{1}{2}$ $Dπ$ scattering and the $D_0^*$ resonance

摘要： 同位旋 $I=\frac{1}{2}$ 通道的 $D\pi$ 散射初步格点QCD结果展示如下。 利用两个体积（$L^3 \times T=32^3 \times 96$ 和 $48^3 \times 96$，单位均为fm）且具有相同晶格间距（$a=0.07746(18)$ fm）和相同pion质量（$m_\pi \approx 303$ MeV）的 $N_f=2+1$ Wilson-Clover构型，构建了质心系和运动系中的各种两粒子算符，并通过它们的相关函数确定了对应的有限体积能谱。 然后利用Lüscher方法提取了$S$和$P$波散射相移，假设高阶部分波的贡献可以忽略不计。还识别出了与$D_0^*$相关的虚拟态。 显示英文摘要

摘要： Preliminary lattice QCD results for $D\pi$ scattering in isospin $I=\frac{1}{2}$ channel are presented. Utilizing the $N_f=2+1$ Wilson-Clover configuration at two volumes ($L^3 \times T=32^3 \times 96$ and $48^3 \times 96$) with the same lattice spacing ($a=0.07746(18)$ fm) and pion mass ($m_\pi \approx 303$ MeV), various two-particle operators in both the COM and the moving frames are constructed and the corresponding finite-volume spectra are determined from their correlation functions. The $S$ and $P$-wave scattering phase shifts are then extracted using the L\"uscher approach, assuming negligible contributions from higher partial waves. A virtual state associated with the $D_0^*$ is also identified.