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The pion and kaon distribution amplitudes at the physical point from quasi-DA matrix elements

ORAL

Abstract

We present our lattice QCD results on the light-cone distribution amplitude (LCDA) of the Pion and the Kaon from their quasi-DA, the moving-pion-to-vacuum matrix element of a bilocal quark bilinear. We determine the first few Gegenbauer moments of Pion and Kaon from a leading-twist OPE-based analysis and reconstruct their x-dependence based on fits to phenomenological Ansatze. We also investigate the dependence of the asymmetric part of Kaon DA on the dialed amount of SU(3) breaking.

Presenters

  • Nikhil Karthik

Authors

  • Nikhil Karthik

  • Xiang Gao

    Brookhaven National Laboratory, Central China Normal University

  • Andrew D Hanlon

    BNL, Brookhaven National Laboratory

  • Swagato Mukherjee

    Brookhaven National Laboratory, BNL

  • Peter Petreczky

    Brookhaven National Laboratory

  • Philipp Scior

    BNL, Brookhaven National Laboratory

  • Sergey Syritsyn

    Stony Brook University (SUNY)

  • Yong Zhao

    Argonne National Laboratory, ANL