第五届中国格点量子色动力学研讨会

Session

12 Oct 2025, 14:30

Conveners

分会六

• 龙成 桂 ()

Contribution list Timetable

35. Multi-hadron resonances

浩波 燕 (Peking University)

12/10/2025, 14:30

Understanding the interactions of multi-hadron systems directly from QCD is an essential step toward connecting the underlying theory of the strong interaction with the rich spectrum of hadronic states. Many open questions in hadron spectroscopy, such as the nature of the $T_{cc}$ and the Roper resonance, are closely tied to the three-body problem. In this talk, I will review recent lattice...

20. $DD^*$ Spectrum in Lattice QCD from Coordinate-Space Two-Hadron Operators and Long-Range Force Analysis

嘉竣 谢 (School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China)

12/10/2025, 14:50

The $DD^*$ energy spectra are extracted from lattice QCD by utilzing the Coordinate-Space Two-Hadron Operators, named as dumbbell method. Finite-volume energies indicate an attractive interaction in $I=0$ channel and a repulsive interaction in $I=1$ channel. To investigate the contribution of the long-range potential, we perform fits using models with and without the long-range potential. We...

22. Low-energy interactions of doubly charmed baryons and Goldstone bosons from lattice QCD

景宇 义 (Hunan University)

12/10/2025, 15:10

The S-wave interactions between doubly charmed baryons ($\Xi_{cc}, \Omega_{cc}$) and Goldstone bosons ($\pi, K, \bar{K}$) are studied using lattice QCD on $N_f=2+1$ CLQCD ensembles ($a = 0.07746$ fm, $M_\pi \simeq 210$ and 300 MeV). By applying Lüscher's method to the finite-volume spectra, we extract scattering lengths and effective ranges for four single-channel systems free of disconnected...

38. Extracting scattering phase shifts of KN scattering using lattice QCD

贾 宇航 (UCAS)

12/10/2025, 15:30

We present a lattice QCD calculation of the K⁺n scattering length and effective range in the S-wave channel. This study employs the CLQCD gauge configurations (ensemble F24P29) with a pion mass of Mπ ≈ 300 MeV and a lattice spacing of a ≈ 0.1053 fm. By computing the finite-volume energy spectrum of the KN system—obtaining 5-6 distinct energy levels in both the center-of-mass frame and several...

23. $\eta$ and $\eta'$ mesons from $N_f = 2+1$ lattice QCD at the physical point using topological charge operators

楠 王 (South China Normal University)

12/10/2025, 15:50

We present the first lattice QCD determination of both the eta and eta' masses as well as the mixing angle theta_1 by using topological charge operators. The calculation employs two state-of-the-art gauge ensembles both with physical quark masses. We obtain m_{\eta} = 0.546(43)(5) GeV, $m_{\eta'}$=0.941(54)(50) GeV, and $\theta_1 = -11.7(2.5)(1.6)^\circ$. Compared with conventional studies...