Pseudoscalar-pole contribution to the (gμ2)(g_{\mu}-2): a rational approach

Jan 20, 2017
19 pages
Published in:
  • Phys.Rev.D 95 (2017) 5, 054026
  • Published: Mar 30, 2017
e-Print:

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Abstract: (APS)
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, aμHLbL;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 aμHLbL;P=94.3(5.3)×10-11, whose uncertainty is well below the one foreseen at future experiments measuring the (gμ-2).
Note:
  • 19 pages, 7 figures
  • muon: magnetic moment
  • photon photon: scattering