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Charm baryon decay constants in Lattice QCD

26 Oct 2025, 17:15
20m
汉宫(Han Palace)

汉宫(Han Palace)

桂林大公馆酒店 No. 2, Zhongyin Road, Xiufeng District, Guilin
Oral 重味与奇异粒子(heavy flavor and strangeness) Parallel II

Speaker

Mr 光宇 王

Description

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 non-perturbative renormalization is performed using the symmetric momentum-subtraction scheme. After performing systematic chiral and continuum extrapolations, we obtain the decay constants with 8-18\% precision.

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