Hadronic light-by-light contribution to (g - 2) <sub>μ</sub>

Author(s)
Gilberto Colangelo, Martin Hoferichter, Massimiliano Procura, Peter Stoffer
Abstract

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.

Organisation(s)
Particle Physics
External organisation(s)
Universität Bern, University of Washington, University of California, San Diego
Journal
EPJ Web of Conferences
Volume
175
No. of pages
18
ISSN
2101-6275
DOI
https://doi.org/10.1051/epjconf/201817501025
Publication date
2018
Peer reviewed
Yes
Austrian Fields of Science 2012
103034 Particle physics
ASJC Scopus subject areas
Physics and Astronomy(all)
Portal url
https://ucris.univie.ac.at/portal/en/publications/hadronic-lightbylight-contribution-to-g--2-(94c65b81-5749-4549-ac91-b47ec2430c61).html