XIIth Meeting on Lattice Parton Physics from Large Momentum Effective Theory (LaMET 2025)

Session

Session VII

Oct 10, 2025, 9:00 AM

CFNS, Peter Paul Seminar Room, C 120 Physics Building (Stony Brook University/Online)

17. Heavy meson light-cone distribution amplitudes from lattice QCD

Xue-Ying Han (IHEP)

10/10/25, 9:00 AM

Heavy meson light-cone distribution amplitudes (LCDAs) are essential nonperturbative quantities that characterize the internal dynamics of heavy mesons. They play a crucial role in the theoretical description of heavy meson (B or D) exclusive decays. However, due to the intrinsic challenges of nonperturbative QCD, first-principles calculations of heavy meson LCDAs have been notoriously...

12. The x-dependent LCDAs: from Mesons to Baryons

Haoyang Bai (Institute of High Energy Physics, CAS)

10/10/25, 9:25 AM

The lattice QCD computation of parton distributions within the framework of large momentum effective theory (LaMET) constitutes a first-principles approach to studying hadron structures. Building upon preceding studies on meson systems, we have developed and partly implemented lattice methodologies for calculating the leading twist LCDAs of light baryons under the LaMET formalism over the past...

9. x-dependent Light Baryon LCDAs from Lattice QCD

Mu-Hua Zhang (Shanghai Jiao Tong University)

10/10/25, 9:50 AM

We present the results of lattice QCD calculation of all leading-twist x-dependent Light-cone Distribution Amplitudes (LCDAs) for baryons in light octet, within the framework of Large-momentum Effective Theory (LaMET). We implement a novel Hybrid renormalization scheme for baryon nonlocal operators, and perform simulations at 4 different lattice spacings a = {0.052, 0.068, 0.077, 0.105} fm,...

18. LCDA Moments of Mesons from Local and Non-local Operators

Ji-Hao Wang (Institute of Theoretical Physics，Chinese Academy of Sciences)

10/10/25, 10:10 AM

We determine the leading-twist light-cone distribution amplitude (LCDA) moments of mesons on MILC ensembles using the HYP-smeared clover action, employing both twist-2 local operators and quasi-DA correlators. Based on the twist-2 local operator, we obtain highly precise values for the meson LCDA moments at the physical point and in the continuum limit. By comparing the results from these two...