Speaker
Description
The discrepancy between the standard model prediction for the muon anomalous magnetic moment and the experimental result is accompanied by other anomalies. A crucial input for the prediction is the hadronic vacuum polarization inferred from hadronic data. However, the two most accurate determinations from KLOE and BaBar disagree by almost 3 sigma. Additionally, the combined data-driven result also disagrees with the most precise lattice determination. We show that all these discrepancies could be accounted for by a new boson produced resonantly around the KLOE centre of mass energy and decaying promptly yielding lepton pairs in the final states. We then present a simple model that can reconcile the KLOE and BaBar results, the data-driven and the lattice SM predictions, and eventually the predicted and measured values of the muon anomalous magnetic moment, while complying with all phenomenological constraints.
| In-person participation | Yes |
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