Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866916200301199360 |
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| author | Melo-Porras, Daniel Rojas, Edilson Alfonso Reyes Fazio, Angelo Raffaele |
| author_facet | Melo-Porras, Daniel Rojas, Edilson Alfonso Reyes Fazio, Angelo Raffaele |
| contents | We review the Hadronic Light-by-Light (HLbL) contribution to the muon anomalous magnetic moment. Upcoming measurements will reduce the experimental uncertainty of this precision observable by a factor of four, thus breaking the current balance with the theoretical prediction. A necessary step to restore it is to decrease the HLbL contribution error, which implies a study of the high-energy intermediate states that are neglected in dispersive estimates. We focus on the maximally symmetric high-energy regime and in quark loop approximation of perturbation theory we check the kinematic-singularity/zero-free tensor decomposition of the HLbL amplitude. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2306_05661 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment Melo-Porras, Daniel Rojas, Edilson Alfonso Reyes Fazio, Angelo Raffaele High Energy Physics - Phenomenology We review the Hadronic Light-by-Light (HLbL) contribution to the muon anomalous magnetic moment. Upcoming measurements will reduce the experimental uncertainty of this precision observable by a factor of four, thus breaking the current balance with the theoretical prediction. A necessary step to restore it is to decrease the HLbL contribution error, which implies a study of the high-energy intermediate states that are neglected in dispersive estimates. We focus on the maximally symmetric high-energy regime and in quark loop approximation of perturbation theory we check the kinematic-singularity/zero-free tensor decomposition of the HLbL amplitude. |
| title | Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2306.05661 |