Chu, Min-Huan and Bai, Haoyang and Hua, Jun and Liang, Jian and Ji, Xiangdong and Schaefer, Andreas and Su, Yushan and Wang, Wei and Xiong, Xiaonu and Yang, Yi-Bo and Zeng, Jun and Zhang, Jian-Hui and Zhang, Qi-An (2025) Light cone distribution amplitude for the Λ baryon from lattice QCD. PHYSICAL REVIEW D, 111 (3): 34510. ISSN 2470-0010, 2470-0029
Full text not available from this repository. (Request a copy)Abstract
We calculate the leading-twist light cone distribution amplitudes of the Lambda(uds) baryon using lattice QCD methods within the framework of large-momentum effective theory. Our numerical computations are carried out with Nf = 2 + 1 stout smeared clover fermions and a Symanzik gauge action on a lattice with spacing a = 0.077 fm and a pion mass of 303 MeV. To approach the large-momentum region, we simulate the equal-time correlations with the hadron momentum Pz = {2.52, 3.02, 3.52} GeV. We investigate the analytic properties of the baryon quasidistribution amplitude in coordinate space and validate them through our lattice calculations. After renormalization and extrapolation, we present results for the threedimensional distribution in momentum fractions of the two light quarks. Based on these findings, we briefly discuss the phenomenological impact on weak decays of Lambda b and outline potential systematic uncertainties that can be improved in the future. This work lays the theoretical foundation for accessing baryon light cone distribution amplitudes from lattice QCD.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCLUSIVE PROCESSES; NUCLEON; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Mar 2026 13:03 |
| Last Modified: | 24 Mar 2026 13:03 |
| URI: | https://pred.uni-regensburg.de/id/eprint/68058 |
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