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.

*This material is based upon work supported by: (i) The U.S. Department of Energy, Office of Science, Office of Nuclear Physics through the Contract Nos. DE- SC0012704 and DE-AC02-06CH11357; (ii) The U.S. Department of Energy, Office of Science, Office of Nuclear Physics and Office of Advanced Scientific Computing Research within the framework of Scientific Discovery through Advance Computing (ScIDAC) award Computing the Properties of Matter with Leadership Computing Resources; (iii) X.G. is partially supported by the NSFC Grant Number 11890712. (iv) N.K. is supported by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE- AC05-06OR23177 and in part by U.S. DOE grant No. DE-FG02-04ER41302. (v) S.S. is supported by the National Science Foundation under CAREER Award PHY- 1847893 and by the RHIC Physics Fellow Program of the RIKEN BNL Research Center

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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