Conveners
Section 13: 分会场-1, Session 3
- 川 刘 ()
The renormalization group beta function encodes how the strength of the strong interaction changes with energy scale, connecting asymptotic freedom at high energies to the onset of nonperturbative dynamics at low energies. We study the beta function of four-flavor QCD using the continuous gradient-flow approach, which provides a nonperturbative definition of the running coupling and its scale...
Lattice QCD provides a first-principles framework for studying the strong interactions and plays an important role in the precision determination of Standard Model parameters. This talk will review the determination of renormalized light and heavy quark masses, and discuss how lattice QCD calculations of hadronic decay matrix elements enable precise extractions of CKM matrix elements....
The field renormalization constant of flowed quark fields, denoted as $Z_\chi$, is a critical component in the non-perturbative renormalization of fermion operators within the gradient flow framework. While the conventional ``ringed'' scheme based on the fermion kinetic term provides a theoretically robust definition, its practical implementation on the lattice is hampered by significant...
The quark gluon vertex is a fundamental quantity in unquenched QCD, where as the "classical" channel, i.e. the spinor structure of $\gamma_\mu$ is related to strong coupling constants $\alpha_s$. Higher order loop correlation would introduce other non-perturbative non-classical structures to the 3-pt correlation function of $\left<\psi\bar\psi A\right>$. In this work, we carried out...
本工作在2+1味clover系综上用LQCD梯度流方法直接计算胶子迹反常对重子质量的贡献，并匹配到MSbar方案。结果显示，胶子迹反常贡献显著且非平庸。且直接计算得到的<g^2 g^2="" tr="">_H与求和规则自洽</g^2>
Using anisotropic clover action for valence bottom quark on CLQCD 2+1 flavor ensembles,we present the accurately prediction of ground state spin-1/2 and spin-3/2 baryon masses containing bottom quark,and extract sigma term contribution to bottom hadron masses using Feynman-Hellman method.
