تقرير
Subleading hadronic vacuum polarization contributions to muon $g-2$: $\mu^+\mu^- \rightarrow \gamma^* \rightarrow \pi^0 \gamma^*$
| العنوان: | Subleading hadronic vacuum polarization contributions to muon $g-2$: $\mu^+\mu^- \rightarrow \gamma^* \rightarrow \pi^0 \gamma^*$ |
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| المؤلفون: | Hong, Deog Ki, Kim, Du Hwan, Lee, Jong-Wan |
| سنة النشر: | 2017 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | We consider the subleading contributions of the hadronic vacuum polarization, involving the $\pi^0\gamma^*\gamma^*$ transition form factor, to the muon anomalous magnetic moment $g-2$. Various models for the form factor, based on hadronic ansatzes and holographic principles, are considered: They are the Wess-Zumino-Witten, vector meson dominance, lowest meson dominance (one and two vector resonances) models, and AdS/QCD. The model parameters are determined by fitting the experimental data for the $e^+ e^- \rightarrow \pi^0 \gamma$ total cross section. We report numerical results of the corrections to the muon $g-2$ that the resulting values of two vector resonances model are of order-of-magntitude smaller than the one obtained from the dispersion relation. Comment: published version, 15 pages, 6 figures, 2 tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3938/jkps.72.221 |
| URL الوصول: | http://arxiv.org/abs/1711.07156 |
| رقم الأكسشن: | edsarx.1711.07156 |
| قاعدة البيانات: | arXiv |
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