Abstract : Recent calculations of the hadronic vacuum polarisation contribution are reviewed. The focus is put on the leading-order contribution to the muon magnetic anomaly involving $e^+e^-$ annihilation cross section data as input to a dispersion relation approach. Alternative calculation including tau data is also discussed. The $\tau$ data are corrected for various isospin-breaking sources which are explicitly shown source by source.
http://hal.in2p3.fr/in2p3-01230205
Contributor : Sabine Starita <>
Submitted on : Wednesday, November 18, 2015 - 9:06:54 AM Last modification on : Wednesday, September 16, 2020 - 4:29:52 PM