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.
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Presenters
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Nikhil Karthik
Authors
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Nikhil Karthik
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Xiang Gao
Brookhaven National Laboratory, Central China Normal University
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Andrew D Hanlon
BNL, Brookhaven National Laboratory
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Swagato Mukherjee
Brookhaven National Laboratory, BNL
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Peter Petreczky
Brookhaven National Laboratory
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Philipp Scior
BNL, Brookhaven National Laboratory
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Sergey Syritsyn
Stony Brook University (SUNY)
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Yong Zhao
Argonne National Laboratory, ANL