Parton Distribution Functions from Large Momentum Expansion of Current-Current Correlators
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866910190847131648 |
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| author | Zhang, Jialu Ji, Xiangdong Schäfer, Andreas Zhang, Rui Zimmermann, Christian |
| author_facet | Zhang, Jialu Ji, Xiangdong Schäfer, Andreas Zhang, Rui Zimmermann, Christian |
| contents | The universality of the large momentum expansion allows computing parton distribution functions (PDFs) starting from any Euclidean correlator with appropriate large momentum Fourier Components. Here we consider current-current correlators which have been used in short-distance expansion to obtain moments of PDFs. The advantage of such correlators is that they have simple renormalization properties and do not have linear power divergences as in quasi-PDF. However, in lattice calculations, four-point functions are needed. Here we present an expansion formula with current-current correlators up to the next-to-leading order, and preliminary numerical calculations with four-point functions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_03234 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Parton Distribution Functions from Large Momentum Expansion of Current-Current Correlators Zhang, Jialu Ji, Xiangdong Schäfer, Andreas Zhang, Rui Zimmermann, Christian High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Theory The universality of the large momentum expansion allows computing parton distribution functions (PDFs) starting from any Euclidean correlator with appropriate large momentum Fourier Components. Here we consider current-current correlators which have been used in short-distance expansion to obtain moments of PDFs. The advantage of such correlators is that they have simple renormalization properties and do not have linear power divergences as in quasi-PDF. However, in lattice calculations, four-point functions are needed. Here we present an expansion formula with current-current correlators up to the next-to-leading order, and preliminary numerical calculations with four-point functions. |
| title | Parton Distribution Functions from Large Momentum Expansion of Current-Current Correlators |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Theory |
| url | https://arxiv.org/abs/2605.03234 |