Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment

Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment

Particles 2024, 7(2), 327 - 381 We review the Hadronic Light-by-Light (HLbL) contribution to the muon anomalous magnetic moment. Upcoming measurements will reduce the experimental uncertainty of this precision observable by a factor of four, thus breaking the current balance with the theoretical pre...

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Bibliographic Details
Main Authors: Melo-Porras, Daniel, Rojas, Edilson Alfonso Reyes, Fazio, Angelo Raffaele
Format: Journal Article
Language:English
Published: 29-11-2023
Subjects:
Physics - High Energy Physics - Phenomenology
Online Access:Get full text
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Summary:Particles 2024, 7(2), 327 - 381 We review the Hadronic Light-by-Light (HLbL) contribution to the muon anomalous magnetic moment. Upcoming measurements will reduce the experimental uncertainty of this precision observable by a factor of four, thus breaking the current balance with the theoretical prediction. A necessary step to restore it is to decrease the HLbL contribution error, which implies a study of the high-energy intermediate states that are neglected in dispersive estimates. We focus on the maximally symmetric high-energy regime and in quark loop approximation of perturbation theory we check the kinematic-singularity/zero-free tensor decomposition of the HLbL amplitude.
DOI:10.48550/arxiv.2306.05661