Three-body unitarity versus finite-volume π+ π+ π+ spectrum from lattice QCD

被引：54
|
作者：
Mai, M. [1 ,2 ]
Doring, M. [1 ,2 ,3 ]
Culver, C. [1 ,2 ]
Alexandru, A. [1 ,2 ,4 ]
机构：
[1] George Washington Univ, Inst Nucl Studies, Washington, DC 20052 USA
[2] George Washington Univ, Dept Phys, Washington, DC 20052 USA
[3] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
[4] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
来源：
PHYSICAL REVIEW D | 2020年 / 101卷 / 05期
基金：
美国国家科学基金会;
关键词：
CHIRAL PERTURBATION-THEORY; SCATTERING-AMPLITUDE;
D O I：
10.1103/PhysRevD.101.054510
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Strong three-body interactions above threshold govern the dynamics of many exotics and conventional excited mesons and baryons. Three-body finite-volume energies calculated from lattice QCD promise an ab initio understanding of these systems. We calculate the three-pi(+) spectrum unraveling the three-body dynamics that is tightly intertwined with the S-matrix principle of three-body unitarity and compare it with recent lattice QCD results. For this purpose, we develop a formalism for three-body systems in moving frames and apply it numerically.
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收藏
页数：9
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