Analytic forms for the $e^+e^-$ annihilation cross sections around a resonance including initial state radiation
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910623964594176 |
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| author | Liu, Baoxin Zhang, Zhenyu Zhou, Xiang |
| author_facet | Liu, Baoxin Zhang, Zhenyu Zhou, Xiang |
| contents | The exact analytic form of cross sections including initial state radiation with Kuraev-Fadin radiative function are obtained for $e^+e^-$ annihilation around a resonance. Despite accounting for vacuum polarization and center-of-mass energy spread effects, the precision remains below 0.1\%, meeting the accuracy requirements of quantum electrodynamics corrections up to $\mathcal{O}(α^2)$. The analytic forms lead to an enhancement in the precision of experimental measurements of physical parameters, such as branching fractions, and demonstrate significantly improved computational efficiency in the regression procedures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_09432 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Analytic forms for the $e^+e^-$ annihilation cross sections around a resonance including initial state radiation Liu, Baoxin Zhang, Zhenyu Zhou, Xiang High Energy Physics - Phenomenology The exact analytic form of cross sections including initial state radiation with Kuraev-Fadin radiative function are obtained for $e^+e^-$ annihilation around a resonance. Despite accounting for vacuum polarization and center-of-mass energy spread effects, the precision remains below 0.1\%, meeting the accuracy requirements of quantum electrodynamics corrections up to $\mathcal{O}(α^2)$. The analytic forms lead to an enhancement in the precision of experimental measurements of physical parameters, such as branching fractions, and demonstrate significantly improved computational efficiency in the regression procedures. |
| title | Analytic forms for the $e^+e^-$ annihilation cross sections around a resonance including initial state radiation |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.09432 |