16–18 Jun 2025
Institute of Physics, Academia Sinica
Asia/Taipei timezone

Lattice QCD calculation of the first and second moments of the kaon distribution amplitude

17 Jun 2025, 16:30
30m
Meeting Room, 5F, New Phys Bldg (Institute of Physics, Academia Sinica)

Meeting Room, 5F, New Phys Bldg

Institute of Physics, Academia Sinica

No. 128, Sec. 2, Academia Rd., Nangang Dist., Taipei City 115201, Taiwan (R.O.C.)

Speaker

Mr Sheng Pin Chang (Institute of Physics, National Yang Ming Chiao Tung University)

Description

The kaon light-cone distribution amplitude (LCDA) is a crucial quantity in understanding the structure of hadrons. In this work, we use lattice quantum chromodynamics (LQCD), a powerful tool for calculating non-perturbative quantities. Since LQCD calculations are performed in Euclidean space, we apply the heavy-quark operator product expansion (HOPE) to connect light-cone parton dynamics with calculations in Euclidean space. This approach entails an OPE analysis of hadronic amplitudes in Euclidean space through the insertion of two local quark bilinears with a fictitious, valence heavy quark. We present the status of our numerical calculation for the first and second Mellin moments of the kaon LCDA obtained through the HOPE framework, advancing our understanding of parton distributions in mesons.

Primary authors

Mr Sheng Pin Chang (Institute of Physics, National Yang Ming Chiao Tung University) Prof. C.-J. David Lin (Institute of Physics, National Yang Ming Chiao Tung University) Prof. William Detmold (Massachusetts Institute of Technology, USA) Dr Anthony Grebe (Fermi National Accelerator Laboratory, USA) Dr Robert Perry (Massachusetts Institute of Technology, USA) Dr Issaku Kanamori (RIKEN, Japan) Dr Yong Zhao (Argonne National Laboratory, USA)

Presentation materials

There are no materials yet.