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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/2504.17123 |
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| _version_ | 1866908335773581312 |
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| author | Lee, Stinson Afanasev, Andrei |
| author_facet | Lee, Stinson Afanasev, Andrei |
| contents | It is demonstrated that two-photon exchange (TPE) corrections to the cross-section of unpolarized semi-inclusive deep-inelastic scattering (SIDIS) generate azimuthal-dependent terms and the corresponding $\braket{\cos{(nϕ)}}$ moments. A quark-diquark model of a nucleon was used in the calculations along with a soft-photon approximation. The infrared divergences in the intermediate steps of calculation are regularized with the fictitious photon mass that cancels out in the final result when the soft-photon bremsstrahlung process and interference terms are added. The calculations employ Mathematica ``LoopTools" package to evaluate the loop integrals. TPE corrections are analyzed in the kinematics of planned experiments at Jefferson Lab. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17123 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Soft-Photon Contribution into Two-Photon Exchange Corrections for Azimuthal Asymmetries of SIDIS Lee, Stinson Afanasev, Andrei High Energy Physics - Phenomenology It is demonstrated that two-photon exchange (TPE) corrections to the cross-section of unpolarized semi-inclusive deep-inelastic scattering (SIDIS) generate azimuthal-dependent terms and the corresponding $\braket{\cos{(nϕ)}}$ moments. A quark-diquark model of a nucleon was used in the calculations along with a soft-photon approximation. The infrared divergences in the intermediate steps of calculation are regularized with the fictitious photon mass that cancels out in the final result when the soft-photon bremsstrahlung process and interference terms are added. The calculations employ Mathematica ``LoopTools" package to evaluate the loop integrals. TPE corrections are analyzed in the kinematics of planned experiments at Jefferson Lab. |
| title | Soft-Photon Contribution into Two-Photon Exchange Corrections for Azimuthal Asymmetries of SIDIS |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.17123 |