Soft-photon radiative corrections to the e−p→e−pl−l+ process
| العنوان: | Soft-photon radiative corrections to the e−p→e−pl−l+ process |
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| المؤلفون: | Niklas Keil, Matthias Heller, Marc Vanderhaeghen |
| المصدر: | Physical Review D. 104 |
| بيانات النشر: | American Physical Society (APS), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Particle physics, Soft photon, media_common.quotation_subject, Hadron, Radiative transfer, Compton scattering, Parton, Nucleon, Asymmetry, Energy (signal processing), media_common |
| الوصف: | We calculate the leading-order QED radiative corrections to the process ${e}^{\ensuremath{-}}p\ensuremath{\rightarrow}{e}^{\ensuremath{-}}p{l}^{\ensuremath{-}}{l}^{+}$ in the soft-photon approximation, in two different energy regimes which are of relevance to extract nucleon structure information. In the low-energy region, this process is studied to better constrain the hadronic corrections to precision muonic hydrogen spectroscopy. In the high-energy region, the beam-spin asymmetry for double-virtual Compton scattering allows us to directly access the generalized parton distributions. We find that the soft-photon radiative corrections have a large impact on the cross sections and are therefore of paramount importance to extract the nucleon structure information from this process. For the forward-backward asymmetry, the radiative corrections are found to affect the asymmetry only around or below the 1% level, whereas the beam-spin asymmetry is not affected at all in the soft-photon approximation, which makes them gold-plated observables to extract nucleon structure information in both the low- and high-energy regimes. |
| تدمد: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.104.073007 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::fb75dae483dce016415f61ffa274b7ea https://doi.org/10.1103/physrevd.104.073007 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........fb75dae483dce016415f61ffa274b7ea |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24700029 24700010 |
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| DOI: | 10.1103/physrevd.104.073007 |