Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment

Daniel Melo-Porras; Edilson Alfonso Reyes Rojas; Angelo Raffaele Fazio

doi:10.3390/particles7020020

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arXiv · 2306.05661

Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment

Daniel Melo-Porras·Edilson Alfonso Reyes Rojas·Angelo Raffaele Fazio

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Abstract

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.

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Daniel Melo-Porras, Edilson Alfonso Reyes Rojas, Angelo Raffaele Fazio. 2023-06-09. Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment. https://doi.org/10.3390/particles7020020

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