The Proton Charge Radius from Dimuon Photoproduction off the Proton
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arXiv
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917778901958656 |
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| author | Lin, Yong-Hui Guo, Feng-Kun Meißner, Ulf-G. |
| author_facet | Lin, Yong-Hui Guo, Feng-Kun Meißner, Ulf-G. |
| contents | We investigate the feasibility of measuring the proton charge radius through dimuon photoproduction off a proton target. Our findings indicate that the Bethe-Heitler mechanism, which dominates at small momentum transfers, allows for an extraction of the proton electromagnetic form factors in the extremely low $Q^2$ region below $10^{-3}$ GeV$^2$ in the spacelike region, when the incident photon beam energy exceeds several hundred MeV. The optimal kinematical region and a sensitivity study of the proton charge radius from dimuon photoproduction are presented. Such a measurement is expected to provide an alternative to the elastic muon-proton scattering measurements such as MUSE at PSI and AMBER at CERN. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_20375 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Proton Charge Radius from Dimuon Photoproduction off the Proton Lin, Yong-Hui Guo, Feng-Kun Meißner, Ulf-G. High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory We investigate the feasibility of measuring the proton charge radius through dimuon photoproduction off a proton target. Our findings indicate that the Bethe-Heitler mechanism, which dominates at small momentum transfers, allows for an extraction of the proton electromagnetic form factors in the extremely low $Q^2$ region below $10^{-3}$ GeV$^2$ in the spacelike region, when the incident photon beam energy exceeds several hundred MeV. The optimal kinematical region and a sensitivity study of the proton charge radius from dimuon photoproduction are presented. Such a measurement is expected to provide an alternative to the elastic muon-proton scattering measurements such as MUSE at PSI and AMBER at CERN. |
| title | The Proton Charge Radius from Dimuon Photoproduction off the Proton |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2407.20375 |