June 29, 2015 to July 3, 2015
Europe/Rome timezone

Dispersive treatment of the hadronic light-by-light contribution to (g-2)_mu

Jul 3, 2015, 8:45 AM
Aula Magna (Buiding E, Polo Fibonacci, Pisa)

Aula Magna

Buiding E, Polo Fibonacci, Pisa


Gilberto Colangelo (University of Berne)


I will describe recent progress in approaching the calculation of the hadronic light-by-light contribution to (g-2)_mu with dispersive methods. I will first discuss general properties of the four-point function of the electromagnetic current in QCD, its Lorentz decomposition and dispersive representation. For what concerns the pseudoscalar pole contributions, I will give an overview of the determination of the pseudoscalar transition form factors. I will then consider the pion-loop contribution and discuss the recently proposed Mandelstam representation thereof.

Presentation materials