Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5494888 | Physics Letters B | 2017 | 5 Pages |
Abstract
We propose a new numerical method to compute the parton distribution amplitude (PDA) from the Euclidean Bethe-Salpeter wave function. The essential step is to extract the weight function in the Nakanishi representation of the Bethe-Salpeter wave function in Euclidean space, which is an ill-posed inversion problem, via the maximum entropy method (MEM). The Nakanishi weight function as well as the corresponding light-front parton distribution amplitude (PDA) can be well determined. We confirm prior work on PDA computations, which was based on different methods.
Related Topics
Physical Sciences and Engineering
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Authors
Fei Gao, Lei Chang, Yu-xin Liu,