On the singular behavior of the chirality-odd twist-3 parton distribution e(x)
The first moment of the chirality-odd twist-3 parton distribution e(x) is related to the pion-nucleon σ-term, which is important for phenomenology. However, the possible existence of a singular contribution proportional to δ(x) in the distribution prevents the determination of the σ-term with e(x) e...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269320307504 |