| Issue |
EPJ Web Conf.
Volume 270, 2022
QCD@Work 2022 - International Workshop on Quantum Chromodynamics - Theory and Experiment
|
|
|---|---|---|
| Article Number | 00029 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/202227000029 | |
| Published online | 17 November 2022 | |
https://doi.org/10.1051/epjconf/202227000029
Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD
1 Dipartimento di Fisica “Ettore Pancini”, Universitá di Napoli ’Federico II’, Via Cintia, 80126 Napoli, Italy
2 INFN-Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, Edificio 6, 80126 Napoli, Italy
* e-mail: luigi.cappiello@na.infn.it
Published online: 17 November 2022
We review the evaluation of scalar mesons contribution to the hadronic light-by-light piece of the muon anomalous magnetic moment, using a holographic model of QCD.We evaluate the contributions of the lightest, sub-GeV scalars σ(500), a0(980) and f0(980) and their associated towers of excited states. Our results point at a negative contribution, overwhelmingly dominated by the σ(500) meson, that we estimate at aμHLbL,S = -9(2)·10-11, in very good agreement with recent determinations from dispersive analyses.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.