Disperon QED
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908984437374976 |
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| author | Fang, Yizhou Kollatzsch, Sophie Rocco, Marco Signer, Adrian Ulrich, Yannick Zoller, Max |
| author_facet | Fang, Yizhou Kollatzsch, Sophie Rocco, Marco Signer, Adrian Ulrich, Yannick Zoller, Max |
| contents | We present disperon QED, a method to deal with data input in loop processes in Monte Carlo codes. It relies on dispersion relations, automated tools such as OpenLoops, effective field theory methods and a threshold subtraction. We motivate this method and apply it to the process $ee\toππ$ in McMule to deal with hadronic vacuum polarisation insertions in two-loop contributions as well as the vector form factor of the pion within the form-factor scalar QED approximation. The generality of this method for more complicated processes is emphasised. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10709 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Disperon QED Fang, Yizhou Kollatzsch, Sophie Rocco, Marco Signer, Adrian Ulrich, Yannick Zoller, Max High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory We present disperon QED, a method to deal with data input in loop processes in Monte Carlo codes. It relies on dispersion relations, automated tools such as OpenLoops, effective field theory methods and a threshold subtraction. We motivate this method and apply it to the process $ee\toππ$ in McMule to deal with hadronic vacuum polarisation insertions in two-loop contributions as well as the vector form factor of the pion within the form-factor scalar QED approximation. The generality of this method for more complicated processes is emphasised. |
| title | Disperon QED |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2512.10709 |