Lattice QCD Constraints on the Fourth Mellin Moment of the Pion Light Cone Distribution Amplitude using the HOPE method
arXiv (Cornell University)(2023)
摘要
The light-cone distribution amplitude (LCDA) of the pion contains information
about the parton momentum carried by the quarks and is an important theoretical
input for various predictions of exclusive processes at high energy, including
the pion electromagnetic form factor. Progress towards constraining the fourth
Mellin moment of the LCDA using the heavy-quark operator product expansion
(HOPE) method is presented.
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关键词
cone distribution amplitude,fourth mellin moment,qcd,pion light
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