第五届中国格点量子色动力学研讨会

Session

12 Oct 2025, 08:40

Conveners

主会七

• 朝峰 刘 ()

Contribution list Timetable

10. Chiral extrapolation of the nucleon mass at two-loop order

Prof. 德良 姚 (Hunan University)

12/10/2025, 08:40

We calculate the nucleon mass in a manifestly relativistic baryon chiral perturbation theory up to the leading two-loop order. Through dimensional counting analysis, we perform the chiral expansion and verify the validity of the extended-on-mass-shell scheme at the two-loop level. As a result, we obtain the complete chiral representation of the nucleon mass up to $\mathcal{O}(p^5)$, which...

1. Total Gluon Helicity from Lattice

Dr 殿君 赵 (CUHK(SZ))

12/10/2025, 09:10

We use the ensemble C24P29 provided by the CLQCD collaboration, insert the topological current using the proton external state of the momentum smear under the Coulomb gauge of the 5-HYP smear, extract the matrix elements to calculate the gluon helicity under lattice QCD, and the calculation proves that different components of the topological currents ($𝐾_𝑧$ and $𝐾_𝑡$) can be used to give...

42. $\Lambda \Lambda- N\Xi$ interactions in $N_f=2+1$ Lattice QCD

Dr 瀚洋 邢 (South China Normal University)

12/10/2025, 09:30

We present a lattice QCD study of two-baryon systems with strangeness $S=-2$, focusing on the $\Lambda\Lambda$ and $\Xi N$ interactions, which are essential for determining the existence of the H-dibaryon. Our calculations are performed on $N_f=2+1$ CLQCD Wilson-Clover configurations, with lattice spacings range from $a \approx 0.05-0.105~\mathrm{fm}$ and pion masses from $M_\pi \approx...

15. Charm baryon decay constants in Lattice QCD

Dr 磊毅 李

12/10/2025, 09:50

We present the first calculation of charmed baryon decay constants using 2+1 flavor gauge ensembles with lattice spacings ranging from 0.05 to 0.1 fm and pion masses between 136 and 310 MeV. Under SU(3) flavor symmetry, we construct the charmed baryon interpolating operators and compute the corresponding hadronic matrix elements to extract the bare decay constants for each ensemble. The...