Pseudoscalar-pole contribution to the (g(mu)-2): A rational approach

Abstrakt

We employ a mathematical framework based on rational approximants in order to calculate the pseudoscalar-pole piece of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon, a(mu)(HLbL);(P). The method is systematic and data based, profiting from over 13 different collaborations, and able to ascribe, for the first time, a systematic uncertainty which provides for the model independence.

As a result, we obtain a(mu)(HLbL);(P) = 94.3(5.3) x 10(-11), whose uncertainty is well below the one foreseen at future experiments measuring the (g(mu) - 2).

Klíčová slova

• by-light scattering
• anomalous magnetic-moment
• transition form-factors
• muon g-2
• hadronic contributions
• power-series
• n-variables
• eta
• approximants
• model