$τ$ data-driven evaluation of Euclidean windows for the hadronic vacuum polarization
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866917582686126080 |
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| author | Masjuan, Pere Miranda, Alejandro Roig, Pablo |
| author_facet | Masjuan, Pere Miranda, Alejandro Roig, Pablo |
| contents | We compute for the first time the $τ$ data-driven Euclidean windows for the hadronic vacuum polarization contribution to the muon $g-2$. We show that $τ$-based results agree with the available lattice window evaluations and with the full result. On the intermediate window, where all lattice evaluations are rather precise and agree, $τ$-based results are compatible with them. This is particularly interesting, given that the disagreement of the $e^+e^-$ data-driven result with the lattice values in this window is the main cause for their discrepancy, affecting the interpretation of the $a_μ$ measurement in terms of possible new physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_20005 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | $τ$ data-driven evaluation of Euclidean windows for the hadronic vacuum polarization Masjuan, Pere Miranda, Alejandro Roig, Pablo High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice We compute for the first time the $τ$ data-driven Euclidean windows for the hadronic vacuum polarization contribution to the muon $g-2$. We show that $τ$-based results agree with the available lattice window evaluations and with the full result. On the intermediate window, where all lattice evaluations are rather precise and agree, $τ$-based results are compatible with them. This is particularly interesting, given that the disagreement of the $e^+e^-$ data-driven result with the lattice values in this window is the main cause for their discrepancy, affecting the interpretation of the $a_μ$ measurement in terms of possible new physics. |
| title | $τ$ data-driven evaluation of Euclidean windows for the hadronic vacuum polarization |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2305.20005 |