Hadronic light-by-light contribution to (g - 2)μ: a dispersive approach

Colangelo, Gilberto; Hoferichter, Martin; Procura, Massimiliano; Stoffer, Peter (26 March 2018). Hadronic light-by-light contribution to (g - 2)μ: a dispersive approach. EPJ web of conferences, 175, 01025. EDP Sciences 10.1051/epjconf/201817501025

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After a brief introduction on ongoing experimental and theoretical activities on (g - 2)μ, we report on recent progress in approaching the calculation of the hadronic light-by-light contribution with dispersive methods. General properties of the four-point function of the electromagnetic current in QCD, its Lorentz decomposition and dispersive representation are discussed. On this basis a numerical estimate for the pion box contribution and its rescattering corrections is obtained. We conclude with an outlook for this approach to the calculation of hadronic light-by-light.

Item Type:

Conference or Workshop Item (Paper)

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:

2100-014X

Publisher:

EDP Sciences

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

08 May 2018 08:54

Last Modified:

13 May 2018 02:25

Publisher DOI:

10.1051/epjconf/201817501025

ArXiv ID:

1711.00281

BORIS DOI:

10.7892/boris.114791

URI:

https://boris.unibe.ch/id/eprint/114791

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