Dispersive approach to hadronic light-by-light scattering

Colangelo, Gilberto; Hoferichter, Martin; Procura, Massimiliano; Stoffer, Peter (2014). Dispersive approach to hadronic light-by-light scattering. Journal of High Energy Physics, 2014(9) Springer 10.1007/JHEP09(2014)091

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Based on dispersion theory, we present a formalism for a model-independent evaluation of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon. In particular, we comment on the definition of the pion pole in this framework and provide a master formula that relates the effect from ππ intermediate states to the partial waves for the process γ * γ * → ππ. All contributions are expressed in terms of on-shell form factors and scattering amplitudes, and as such amenable to an experimental determination.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Colangelo, Gilberto; Hoferichter, Martin; Procura, Massimiliano and Stoffer, Peter

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

24 Nov 2014 14:57

Last Modified:

26 Jun 2016 01:56

Publisher DOI:

10.1007/JHEP09(2014)091

ArXiv ID:

1402.7081

BORIS DOI:

10.7892/boris.60234

URI:

https://boris.unibe.ch/id/eprint/60234

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