Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD
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...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2022/14/epjconf_qcd@work2022_00029.pdf |
| _version_ | 1811179685339463680 |
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| author | Cappiello Luigi |
| author_facet | Cappiello Luigi |
| author_sort | Cappiello Luigi |
| collection | DOAJ |
| description | 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 aμHLbL,S = -9(2)·10-11, in very good agreement with recent determinations from dispersive analyses. |
| first_indexed | 2024-04-11T06:37:45Z |
| format | Article |
| id | doaj.art-09099b96501c46a397e63cb579ef7441 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-11T06:37:45Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-09099b96501c46a397e63cb579ef74412022-12-22T04:39:37ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012700002910.1051/epjconf/202227000029epjconf_qcd@work2022_00029Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCDCappiello Luigi0Dipartimento di Fisica “Ettore Pancini”, Universitá di Napoli ’Federico II’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 aμHLbL,S = -9(2)·10-11, in very good agreement with recent determinations from dispersive analyses.https://www.epj-conferences.org/articles/epjconf/pdf/2022/14/epjconf_qcd@work2022_00029.pdf |
| spellingShingle | Cappiello Luigi Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD EPJ Web of Conferences |
| title | Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD |
| title_full | Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD |
| title_fullStr | Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD |
| title_full_unstemmed | Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD |
| title_short | Hadronic ligh-by-light contribution to the anomalous magnetic moment of the muon: The role of scalar resonances in a holographic model of QCD |
| title_sort | hadronic ligh by light contribution to the anomalous magnetic moment of the muon the role of scalar resonances in a holographic model of qcd |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/14/epjconf_qcd@work2022_00029.pdf |
| work_keys_str_mv | AT cappielloluigi hadroniclighbylightcontributiontotheanomalousmagneticmomentofthemuontheroleofscalarresonancesinaholographicmodelofqcd |