Coulomb corrections for the non-flip and spin-flip electromagnetic $\boldsymbol{p}^\uparrow\!\boldsymbol{A}$ amplitudes
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866915786825662464 |
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| author | Poblaguev, Andrei |
| author_facet | Poblaguev, Andrei |
| contents | It is demonstrated that, within the eikonal approach, the Coulomb corrections to the elastic electromagnetic non-flip and spin-flip proton--nucleus amplitudes are identical when the two amplitudes share the same exponential form factors. This result allows Coulomb corrections to be computed numerically, and with high precision, for both electromagnetic and hadronic elastic $p^{\uparrow}A$ amplitudes in the massless-photon limit, including the effects of soft magnetic photon exchange. The method relies on analytical expressions and numerical integrations over a finite impact-parameter range with nonsingular integrands, providing a practical and systematically controlled framework for phenomenological applications. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_08946 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Coulomb corrections for the non-flip and spin-flip electromagnetic $\boldsymbol{p}^\uparrow\!\boldsymbol{A}$ amplitudes Poblaguev, Andrei High Energy Physics - Phenomenology It is demonstrated that, within the eikonal approach, the Coulomb corrections to the elastic electromagnetic non-flip and spin-flip proton--nucleus amplitudes are identical when the two amplitudes share the same exponential form factors. This result allows Coulomb corrections to be computed numerically, and with high precision, for both electromagnetic and hadronic elastic $p^{\uparrow}A$ amplitudes in the massless-photon limit, including the effects of soft magnetic photon exchange. The method relies on analytical expressions and numerical integrations over a finite impact-parameter range with nonsingular integrands, providing a practical and systematically controlled framework for phenomenological applications. |
| title | Coulomb corrections for the non-flip and spin-flip electromagnetic $\boldsymbol{p}^\uparrow\!\boldsymbol{A}$ amplitudes |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2602.08946 |