Three-Body Dynamics of the a1(1260) Resonance from Lattice QCD
Three-Body Dynamics of the a1(1260) Resonance from Lattice QCD
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晶格 QCD 的 a1(1260) 共振的三体动力学
DOI：
10.1103/physrevlett.127.222001
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发表时间：
2021
影响因子：
8.6
通讯作者：
Sadasivan, Daniel
中科院分区：
文献类型：
--
作者：
Mai, Maxim;Alexandru, Andrei;Brett, Ruairí;Culver, Chris;Döring, Michael;Lee, Frank X.;Sadasivan, Daniel
共振强子系统通常表现出复杂的衰变模式，其中三体动力学起着重要甚至主导的作用。在这项工作中，我们专注于共振。第一次，三体共振的极点位置和分支比计算从格子QCD使用一，二，和三介子插值和三体有限体积形式主义扩展到自旋和耦合通道。这标志着从三体动力学角度对普通强子与混杂强子和奇异强子的共振沿着进行从头计算研究的一个新的里程碑。
Resonant hadronic systems often exhibit a complicated decay pattern in which three-body dynamics play a relevant or even dominant role. In this work we focus on theresonance. For the first time, the pole position and branching ratios of a three-body resonance are calculated from lattice QCD using one-, two-, and three-meson interpolators and a three-body finite-volume formalism extended to spin and coupled channels. This marks a new milestone forab initiostudies of ordinary resonances along with hybrid and exotic hadrons involving three-body dynamics.