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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.23563 |
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| _version_ | 1866912794254770176 |
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| author | Alvaro, Alessio Carmelo Castelli, Ignacio Lorcé, Cédric Metz, Andreas Pasquini, Barbara Rodini, Simone |
| author_facet | Alvaro, Alessio Carmelo Castelli, Ignacio Lorcé, Cédric Metz, Andreas Pasquini, Barbara Rodini, Simone |
| contents | We investigate the twist-2 unpolarized generalized parton distributions (GPDs) of quarks for an on-shell gluon target in quantum chromodynamics. These GPDs parametrize the leading-twist matrix elements of the nonlocal light-like flavor-singlet vector current. We compute them at one-loop accuracy in perturbation theory using a quark mass and dimensional regularization as infrared regulators. In particular, we discuss the limit of vanishing momentum transfer. The present work extends our previous related study on the axial current. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_23563 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Perturbative results for the matrix elements of the vector current and the role of different infrared regulators Alvaro, Alessio Carmelo Castelli, Ignacio Lorcé, Cédric Metz, Andreas Pasquini, Barbara Rodini, Simone High Energy Physics - Phenomenology Nuclear Theory We investigate the twist-2 unpolarized generalized parton distributions (GPDs) of quarks for an on-shell gluon target in quantum chromodynamics. These GPDs parametrize the leading-twist matrix elements of the nonlocal light-like flavor-singlet vector current. We compute them at one-loop accuracy in perturbation theory using a quark mass and dimensional regularization as infrared regulators. In particular, we discuss the limit of vanishing momentum transfer. The present work extends our previous related study on the axial current. |
| title | Perturbative results for the matrix elements of the vector current and the role of different infrared regulators |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2512.23563 |