Speaker
Description
The light-cone distribution amplitude (LCDA) is a fundamental non-perturbative quantity for understanding hadron structure. We report on our calculation of the pion and kaon LCDAs using the heavy-quark operator product expansion (HOPE) framework. This method employs an OPE analysis of hadronic amplitudes through the inclusion of a fictitious valence heavy quark, and has previously been shown to be a viable method to compute the second and fourth Mellin moments of the pion in the quenched approximation. In this talk we present preliminary results for the first three nontrivial Mellin moments of the kaon LCDA, as well as the second moment of the pion LCDA, from dynamical calculations using the CLS ensembles. This work demonstrates the feasibility of the HOPE method for accessing higher moments of meson LCDAs from lattice QCD.
| Parallel Session (for talks only) | Structure of hadrons and nuclei |
|---|
