Abstract
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 𝑎𝜇 measurement in terms of possible new physics.
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 𝑎𝜇 measurement in terms of possible new physics.
| Original language | English |
|---|---|
| Article number | 138492 |
| Number of pages | 9 |
| Journal | Physics Letters B |
| Volume | 850 |
| DOIs | |
| Publication status | Published - Mar 2024 |