$I=2$ $\pi\pi$ scattering phase shift from the HAL QCD method with the LapH smearing
$I=2$ $\pi\pi$ scattering phase shift from the HAL QCD method with the LapH smearing
复制标题
$I=2$ $pipi$ 使用 LapH 涂抹的 HAL QCD 方法的散射相移
DOI：
10.1093/ptep/pty032
复制
发表时间：
2018
影响因子：
3.5
通讯作者：
Kenji Sasaki
中科院分区：
文献类型：
--
作者：
Daisuke Kawai;Sinya Aoki;Takumi Doi;Yoichi Ikeda;Takashi Inoue;Takumi Iritani;Noriyoshi Ishii;Takaya Miyamoto;Hidekatsu Nemura;Kenji Sasaki
从量子色动力学（QCD）的基本理论出发，理解强子的谱（包括共振态），是粒子物理和核物理的主要目标之一。格点QCD是QCD的第一性原理计算的一种成熟的方法：单个强子基态能谱的计算已经成熟，确定强子之间的相互作用是下一个重要的挑战，这对研究强子-强子散射和共振态的性质（如ρ和）至关重要。在格点QCD中，强子-强子相互作用主要用两种方法研究。第一种是Lüscher的有限体积法[1]及其推广[2-13]。在这种方法中，有限体积晶格上的态的能量从时间相关函数中提取，并被转换为散射相
Understanding the spectra of hadrons including resonant states from the fundamental theory, quantum chromodynamics (QCD), is one of the major goals in particle and nuclear physics. Lattice QCD is a well-established approach to first-principles calculation of QCD: The calculation of the spectra of the ground state of the single hadron has been matured and it is an important next challenge to determine interactions between hadrons, which are essential to study hadron–hadron scatterings and properties of resonances such as ρ and. In lattice QCD, hadron–hadron interactions are mainly investigated by two methods. The first is Lüscher’s finite-volume method [1] and its extensions [2–13]. In this approach, the energies of the states on finite-volume lattices are extracted from temporal correlation functions and are converted to the scattering phase