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Recent BES measurements and the hadronic contribution to the QED vacuum polarization
We have updated our evaluation of the hadronic contribution to the running of the QED fine structure constant using the recent precise measurements of the e+e- annihilation at the center-of-mass (c.m.s.) energy region between 2.6 and 3.65 GeV performed by the BES collaboration. In the low energy reg...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2011
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.84.037502 http://cds.cern.ch/record/1359550 |