15-19 June 2015
Asia/Novosibirsk timezone

Pseudoscalar-exchange contribution to g-2 from rational approximants

17 Jun 2015, 10:40
Oral presentation Muon g-2


Mr Pablo Sanchez Puertas (Johannes Gutenberg University, Mainz)


Padé Approximants have been used to describe the light pseudoscalars transition form factors (TFFs) in the space-like region. Once the low energy parameters are determined from a fit to data, they provide a systematic and model-independent tool for describing the TFFs. We discuss their generalization to the bivariate case, which allows a systematic description for the double-virtual TFF. This is of utmost relevance for the Light-by-Light contribution to g-2. Lacking double-virtual data, we discuss expectations and its connection with pseudoscalar decays into lepton-pairs.

Primary author

Mr Pablo Sanchez Puertas (Johannes Gutenberg University, Mainz)


Pere Masjuan (Johannes Gutenberg University, Mainz)

Presentation Materials