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Analysis of the hadronic light-by-light contributions to the muon g − 2

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Bijnens, Johan, Pallante, Elisabetta, Prades, Joaquim·1996·Nuclear Physics B

Abstract

We calculate the hadronic light-by-light contributions to the muon g − 2. We use both 1/Nc and chiral counting to organize the calculation. Then we calculate the leading and next-to-leading order in the 1/Nc expansion low energy contributions using the Extended Nambu-Jona-Lasinio model as hadronic model. We do that to all orders in the external momenta and quark masses expansion. Although the hadronic light-by-light contributions to muon g − 2 are not saturated by these low energy contributions we estimate them conservatively. A detailed analysis of the different hadronic light-by-light contributions to muon g − 2 is done. The dominant contribution is the twice anomalous pseudoscalar exchange diagram. The final result we get is aμlight-by-light = (−9.2 ± 3.2) × 10−1. This is between two and three times the expected experimental uncertainty at the forthcoming BNL muon g − 2 experiment.

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Metadata

Authors
Bijnens, J., Pallante, E., & Prades, J.
Venue
Nuclear Physics B
Publisher
Elsevier BV
Published
1996-08
Volume
474
Issue
2
Pages
379-417
ISSN
0550-3213 (ISSN-L)
OpenAlex
W2087003379
Cited by
214
References
2
FWCI
5.83
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Analysis of the hadronic light-by-light contributions to the muon g − 2. https://app.cochat.ai/papers/10.1016/0550-3213(96)00288-x
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Bijnens, J., Pallante, E., & Prades, J. (1996). Analysis of the hadronic light-by-light contributions to the muon g − 2. Nuclear Physics B. https://doi.org/10.1016/0550-3213(96)00288-x

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