Symmetry Constraints on Pion Valence Structure
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917047715233792 |
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| author | Wang, Xiaobin Chang, Lei Ding, Minghui Raya, Khepani Roberts, Craig D. |
| author_facet | Wang, Xiaobin Chang, Lei Ding, Minghui Raya, Khepani Roberts, Craig D. |
| contents | The profile of the pion valence quark distribution function (DF) remains controversial. Working from the concepts of QCD effective charges and generalised parton distributions, we show that since the pion elastic electromagnetic form factor is well approximated by a monopole, then, at large light-front momentum fraction, the pion valence quark DF is a convex function described by a large-$x$ power law that is practically consistent with expectations based on quantum chromodynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_23950 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Symmetry Constraints on Pion Valence Structure Wang, Xiaobin Chang, Lei Ding, Minghui Raya, Khepani Roberts, Craig D. High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Experiment Nuclear Theory The profile of the pion valence quark distribution function (DF) remains controversial. Working from the concepts of QCD effective charges and generalised parton distributions, we show that since the pion elastic electromagnetic form factor is well approximated by a monopole, then, at large light-front momentum fraction, the pion valence quark DF is a convex function described by a large-$x$ power law that is practically consistent with expectations based on quantum chromodynamics. |
| title | Symmetry Constraints on Pion Valence Structure |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2510.23950 |